This is one of the strongest 3 / 2 agendas available and enables the never advance game in NBN. It enables additional shenanigans and is the only agenda that you can use to score and win the game, you need a lot of advancements (13 in total) and usually a tagged runner and Psychographics but it's possible. Hard-Hitting News might already activate it.
It encourages you to use scoring windows especially in the early game, you can score 3 points to reduce the number of agendas you need to score to 2 or in the late game you can use it to close the game. It also forces the runner to run even when they are not ready.

This agenda is called Global Food Initiative 4 - 6 in any NBN deck and this is true! You can install, advance, advance it and score it as a 5 / 3 agenda, while it's only worth 2 points to the runner. Truth is as well, this only counts 2 points to your 20 agenda points, so it's not a GFI in this regards, but on the other side you can also score it as a 3 / 2 and that makes it one of the most flexible agendas in any NBN deck.

If your opponent plays The Source it becomes a 4 / 2 but at the same time it remains a 5 / 3, as you get a counter for every advancement over 3! This is also true for all the other 3 / 2 like Project Vitruvius, Project Atlas and Braintrust

777

This is a very interesting card. Play it turn 1 or 2 to force the Corp to decide if they want to defend HQ or R&D and / or give you potential free access on the other Central especially if no Hedge Fund was played so far. On top it takes away the surprise factor and facecheck punishment, additionally in the early game crims can use Special Order to fetch the correct breaker to increase the pressure. On top it might enable Emergency Shutdown so corp rezzes ICE on Remote, you run HQ for free and derez it. So in this it's similar to Maxwell James and both have different purposes.

Playing against Archer this is nice, does the corp want to rez it, when you are not facechecking it? Probably no and if yes, it might prevent you from getting in, but without the corp getting 2 creds and you loosing potentially 2 breakers.

When the Corp tries to score an Agenda, like: Install, Advance, Advance, this card shines. You know they will likely use their creds to defend the remote. Usually you use this point in time to get free / cheap access to HQ and / or R&D. But with an FAO in hand you could use it put them in a lose lose position. You rez the ICE I get the agenda, you don't and you might need to find another ICE to protect this server. On top if the runner runs on a central in such a situation, the ICE might be crippling him and it might become impossible to run the remote (e.g. rezzing Tollbooth might make them lose the creds to install Paperclip & break Vanilla, but not anymore with FAO).

Also in the late game it can create such situations as it might remove 1 ICE from a central and you know the one rezzed is easy to break. But of course there it's more important to wait for the right moment to use it. Of course Los: Data Hijacker makes this even more interesting as it means he get's his ID ability creds without running so it's an auto include combined with Rubicon Switch he can get crazy.

777

This card got a new best friend named Bryan Stinson and thus it creates multiple win win situations. It's a must trash asset which is good and on top it's a trap you can't ignore. When you get it into a taxing remote you win either by the runner not running it and you can bankrupt him or by running it and bankrupting himself with your taxing ICE + the trash costs, either is fine from the corps point of view. The runner losing 4 Credit's per Advancement is great too.
On top of that when you have bankrupted the runner you can fire cards with Bryan Stinson like :

And especially in Cerebral Imaging: Infinite Frontiers you can fire cards like:

so in CI you can trigger them both in one turn, making them incredible strong and dangerous. Thus you can find them in the World Championship Deck 2017.

777

This is a natural combination and a support card for Los: Data Hijacker as he get's 2 creds for the first ICE rezzed per turn the likelyhood you might come out of this ahead is great as derezzing means you will get the Los bonus again (and again and again). Of course this makes most sense if there are more support cards that benefit from rezzing ICE such as Compromised Employee, Keros Mcintyre, Collective Consciousness and Ice Analyzer (together with the bird breakers).
This can create situations where the corp don't want to rez ICE anymore which is something you will like to as it means runs are for free and you can save your resources for the times you really need them and you avoid situations as a criminal where you are locked out and your engine is not going anymore.
The downside is, that you need a click to do this, which is different to the bird breakers and you can only do it the turn the ICE was rezzed. So you will need other tools like Emergency Shutdown and Crescentus to get ICE derezzed again to bring it back to Rubicon Switch range.
I think it's more a tool for the mid to late game where you can avoid runs becomming to costly and make it uninteresting for the corp to rez ICE as they know what will happen, which is a positiv thing ;-) combine this with The Gauntlet they will think about rezzing ICE, know you can break it, get creds for it and will see an additional card and afterwards might derezz it again....

777
En Passant could be used to trash derezzed ice. —

With the release of Los: Data Hijacker, this cards moves from binder fodder to being interesting!

Besides the things already mentioned new cards are released that makes Los more interesting and even this card. As Los get 2 creds for the first ICE rezzed together with CE the corp might no be willing to rez some ICE anymore as you might get 3 - 5 creds. And not only this alone, when there is a Rubicon Switch out, you can derez it immediately after the run. So the corp is sinking it's creds, while you are earning money from it. Imagine a Vanilla, you get 4 creds, a successful run (with Desperado) and afterwards you derez the Vanilla. It costs you a click... but next turn, repeat. On top you can combine this with Keros Mcintyre which gives you 2 creds for derzzing. Derezing a low cost ICE gives you 2 creds extra beside the creds for the rez.
An interesting combo for Los, CE, Rubicon Switch & Keros Mcintyre.
On top of that, the questions is, are you playing Forged Activation Orders? Emergency Shutdown?
And what is your breaker Suit? I think Ankusa sounds interesting at the start (although no derez effect), but breaking Eli 1.0 for 8?? No, better do it with Paperclip for 3 and derez it for 3 sounds more intriguing for me and it doesn't cost you 6 to install.
The birds (Golden, Peregrine & Saker) might also be an interesting include, although they seem to inefficient to me and depending on the server the corp might be able to trick you....
On top CE is interesting against some pain ICE for Crims, such as Ichi 1.0, as you don't have link, you can use the creds so it's "only" 5 creds with Mongoose and perhaps you derez it afterwards ;-)

777
Notice that Ankusa does not derez the ICE. —
Agree this makes Ankusa more interesting as it increases the costs when you have to install it on 2 or 3 position again.... —