Chop Bot is (currently) a very important card for Apex: Invasive Predator. It allows him to chop a card and together with Wasteland & Reaver and he gains money for them and get's card draw additional to the ability of Chop himself. He is part of the economy engine of Apex, as Aesop's Pawnshop is for Hayley Kaplan: Universal Scholar or Noise: Hacker Extraordinaire. On top of that he can remove Tags, so cards like Hard-Hitting News are not as awful as before as you will start with 3 Tags that need removal leaving one click when you have cleared the other 3.
Remember to keep one in hand, to install him after Apocalypse! To get the cards installed back into the heap. Also he works well with the conspiracy breakers (Paperclip, MKUltra and Black Orchestra), as you can install them with the Apex ability face down and chop them after, so they can be used in future runs and you don't have to overdraw. As well as Harbinger which can be used twice.
This can make an Apex deck with Faust really strong, as it enables additional card draw at the start of your turn.
Usually he will net you 2 - 3 extra triggers like:
1 card & 2 creds beside the Chop trigger.
I'd like to recommend the following deck, for the state of the Meta Start 2017: netrunnerdb.com