I think things that would benefit AMPCs are less about their mechanical survival, and offering them more tools for story telling, scene setting, and autonomy without DMs. I personally would love to see, and I've tossed around these ideas before:
- A tool, similar in design to the portable bench for carpenters, to allow AMPCS to create placeables for scenes. Blood, corpses, bones, and placeables like candles, runes. Ideally, being able to set both useable and non-useable placeables, and having the option of re-writing their descriptions like signs and notes would be great. Write some good guidelines on the tool / for MPCs so they don't get carried away and we're golden.
- AMPCs to have the ability to create their own henchman, rather than be specifically tied to the locations and spawns on the server to grab them and smuggle. A basic idea would be a noncombat, limited used command (Rest menu or linked through the target: other commands) that spawns a 'monsterous wight, ghoul, vampire, etc' for your appropriate template and an averaged difficulty.
- More areas, specifically things like extra dead-end parts of dungeons, secret transitions, non-linear places to be explored. Add some scripted maneuvering like secret tight spaces, leaps, or climbing discover-able with search would be cool too.
- More dynamic caves that are 'far' away, that only cycle between possible AMPC templates