Disclaimer: I haven’t played AST in the new system. Haven’t had the heart. But it seems to me that the complexity in the new AST card system is entirely mechanical. Take note of highest performing melee and ranged dps. Apply buff to correct target. Fish for seals. Waste the rest of your cards on minor arcana so you don’t stuff your seals then divination. The old system was unpredictable, and you had to be very aware of what was going on to make the most of it. That is the kind of complexity I want. The same sort of complexity that made me want to heal (and be aware of what’s going on with any given run and using my skills appropriately) rather than play a dps with a mechanically fiddly rotation.
P.S. If my interpretation of the current system is wrong, please tell me.