Libramarian
Adventurer
What about the class looks especially complex to you? I will try to simplify anything that is overly complex.
Honestly, I thought this class was far more simple than the battlemaster and orders of magnitude more simple than the warlock (which is one of the most simple spellcasting classes there is).
Well you have a decision point between a handful of maneuvers whenever you have combat focus and it's your turn or one of your triggers just went off. That's pretty complex. That would be fun in a high stakes "boss" combat but tedious in a low stakes "trash" combat. Unfortunately because these are encounter resources the player would feel pressure to use these every combat, slowing down the trash combats that are supposed to be simple and brutal. The nice thing about daily resources is the complexity of the class naturally scales up or down according to the stakes of the battle at hand (assuming competent resource management). If you could somehow design the maneuevers so that they naturally will only be useful in a high stakes combat, without making them daily abilities, then I think that would work. I don't know how you would do that though. I don't have the PHB yet so I can't compare this to the battlemaster or warlock. It's possible that I would also want to make these criticisms against those classes.
Many people do run games where every combat is balanced to be difficult-but-winnable and PCs only go 1 or 2 battles between rests. I think this class would work best in that type of game, possibly as a straight replacement for the fighter.