When talking about your deck to opponents, you can also call it 'Quatman', without pronouncing the 'u', to confuse everybody. This is very efficient in a tournament setting, and fun in casual play at your local store.
Your Rig should be : Atman@4 + sucker(s) + Mimic + Yog + a free memory for parasites + whatever you want, you're an adult. You don't need me to hold your hand.
Spinal Modem is there because a runner that is not physically rigged to the cyberspace with cables and optic fibers is not a true runner. Also, you can use the creds for the Atman power counters, which is a cute trick.
This is the v0.0 of the deck, hence the complete lack of econ. Deal with it. (your rig should be extremely efficient anyway).
The retrieval runs are there because having some kind of Archive pressure is always best. You want them to have an ICE installed there, and you want to force them to rez it.
Another detail, Retrieval Run is not seen as an economy card here, but as a recursion card. Don't hesitate to use it on D4v1d/parasites.
Last detail: Why is Retrieval Run good in this deck and bad in pretty much any other deck? Because you can retrieve a card during the same turn it got dumped in the heap (with Inject), without letting the corp react. The only other way to do so is to Scavenge something to install another card from your hand, or to use Freelance Coding Contract.
What I would love to find space for:
3 SoT
more economy
a Femme Fatale, maybe?
What will be decided during testing:
I still do not know which version is best : {x3 clone chip x2 stimhack} or {x3 Scavenge x2 SoT}. What you lose in parasite recursion, you win in D4v1d/Imp recursion, with more consistency (due to the SoT). The scavenge version is also better in terms of pure credit cost (clone chip & CO costs money, scavenging stuff is free).