Unless I missed something, right now you have to select an option for every single pop-up with a mouse click. This isn't a problem for most characters, but it really bogs down the paladin's and (especially) sorcerer's gameplay. Having to move your mouse and click a button to say "no" to Divine Smite/Metamagic every single time you attack or cast a spell slows things down a lot, and it would make the Bard's Bardic Inspiration basically unplayable.
This problem is easily fixable by just allowing the player to say "no" by pressing a mapped keyboard key. The game already has mappable keys for camera control and other things, so implementing this shouldn't really require much effort.
Thank you :D