It is the humble opinion of this Elezen that most if not all of these changes will make the game much more playable, especially being able to map your keyboard AND gamepads however you want.

With all this UI stuff out of the way, maybe they'll be targeting Linkshell, party, and server lag issues next.

I guess I can agree that the rarity color-coding is a bit superfluous, but I think adding the optimal level coloring could be helpful.