As a note this is also going to suck for Paladins since by what I can tell here Paladins will have to decide whether or not to Smite before they roll instead of choosing to add it to a successful attack as you can in the TTRPG.
Nah, they will do the same to Paladins what they did to Weapon Masters: a Hotbar button for a separate kind of attack, which will use up a spell slot if they hit and won't if they miss. Same as it is with superiority dice, currently.
