I believe the last section for opportunity attacks is for all Reactions - as they are a distinct action separate from Actions and Bonus Actions.
My suggestions for the UI would actually about separating out things like "at-will", "per short rest", and "per long rest / spell slots". It feels strange that for a spellcaster who uses cantrips as their primary attack - such weight is given to their weapon skills and their cantrips are mixed up with their spell-slot spells in the UI.
I totally agree.
It's really confusing atm and you have to manage skill bar every hour...
I don't really like the overall UI.
The minimap is awfull and there are too many buttons everywhere arround it.
A beautifull bar somewhere down the screen for inventory, equipement, spells... should be better. Or a least a single button that open a real menu.
I'd also really love to have way more beautifull portrait.
Actually they're really cheap.
