Ya know what, I wouldn't mind the small grid so much if you allowed damage to carry over into the next slot. If they have only 2 points left in their armor, and I do a 20 point hit, 18 of those points should carry over to the next branch.
You know, on hard mode, there is a difference between making a final boss difficult and making him cheap by forcing him to spam the same attack where he can't be touched over and over again.
The length of some of these battles just doesn't correspond with the difficulty at all. Right now, I got nothing but mass Copters up above me killing everything before it can even get close to the castle and I don't even need to worry about it.
Its like I'm just waiting for the end rather then playing the game.