From My Experience:
- Airbases Deploying 200 Planes takes ages to deploy (I got the Same Comment from my Ultimate Mod)
- Carriers deploying 50 Planes is just about OK, I settled for 30.
- Just about no-one plays Plain RoN Any More!
- 1 Million Pop Limit, well, as long as people don't go crazy and make 2000 Units, thats decent - I've got a wicked computer and it can deal with 1000 Units (on very slow speed, permanant slowdowns).