I'd prefer if the back button would always go to the previous screen rather than all the way back.
Now the talent upgrade screen does have the cancel button but the back button goes straight out of talents screen. This would just take getting used to.
But on tact point screen the back button always takes you to combat view instead of tact menu. Or make a cancel button for tact point screens as well. As long as the method is consistent throughout the game
I'm a positive pessimist, I think. I'm probably wrong, but thats okay.