Undrave
Legend
The psychologist George Miller came up with a "magic" number of 7 for how many chunks of information we can fit in short term memory. From my experience, having everything within a range of 3-7 items of information, choices, options, etc has worked well and I use it in a lot of my presentations, business cases and other kinds of communication.
I think it applies well here also. In 3.5 e we went from 20+ (although most minor) to 1. I think a few groups like an "object interaction" meaning to pick up something from the ground, getting something from a backpack, opening a door, etc works well as a chunk (I would probably have removing a weapon from a sheath exempt from this, as sheathes are designed for the purpose of quick and easy retreival).
So at the moment on the suggestions above, it looks like:
- Moving within an opponent's range
- Standing up from prone
- Object Interaction
- Using a ranged spell/attack
The AoOs themselves rarely came anywhere near that 7 bits of info because Alice didn't usually need to remember which of Bob's abilities provoked an AoO unless they were playing the same class & both had the same ability. Monster abilities pretty much came down to "did it move more than 5 feet, drink a potion/scroll, or cast a spell?... still not sure, ask the gm who will say yes or no if it has a (Sp) tag or not on the ability"
I'd like to point out that Polearm Mastery, Mage Slayer and Sentinel all add additional AoO triggers to specific characters. What if we just played it that way and added more of them? Including on monsters. Not ALL creatures could AoO on someone spell casting, but a few specialists can.
I think it makes it a more engaging mechanic and one that feels more active and that feed into more interesting build options.