A little bit of mayhem goes a long way. Being unreadable, especially in conquest, is a big boon.
Try to use Moon Girl to duplicate Dino, this is usually very unexpected to the opponent. Cable is essential, as he fuels the main mechanics of the deck while providing the opportunity to completely cripple the opponent. The board can easily become overrun with this deck. Beast clears up a location, allows reuse of Val/Cable/etc, and buffs Collector, but there is real danger of the hand becoming overfull, and he himself is puny—Carnage might be a better choice. Maria is probably the most replaceable card here (probably Snowguard). White Queen could be replaced (probably Nick), but I like that she gives you information in addition to being able to match the opponent's big move. Nick/Coulson look nice, but there's no way to play them all, they make Moon Girl less effective, and I probably prefer the other options already in the deck. Nick can be fun though, and has the potential to provide some unexpected results.
Fuck Sentinel. You heard me.