If the main complaints now are that the bolt lift looks icky, and Aero is an AR-15 company then they must be doing a lot right with this action. They added pretty much all of the features folks have asked for since the beginning of this thread. I like a decently smooth bolt, but I think I'll hold my condemnation until the sample size of actions folks have touched is >1, the feature package looks solid for $899.
The ARC CDG is probably going to be at least $100 more after the intro price expires, and the prefit situation is mostly promises and intent at this point. Tenacity is out of the picture, the Origin is the main competitor, uses the same ubiqutous prefits and arguably has fewer features.