Possible to go inside Vault City without Day pass: Even as a non-citizen for trading purposes.....
Return normal experience from shit shoveling: No, XP from shit shovelling is to easily abused.... but make it worth money.
Remove INT requirement to recruit companion (Drugs are one solution for this one): MONEY alone should be the deciding factor. Cold, hard CASH.
Not everyone have good Intelligence to get companion, Party Points should only effect to recruiting.: PP should only effect how many followers/companions/etc you can lead at any given time; you can have 10,000 slaves, but only 2 or 10 or whatever actually WITH you on worldmap.
Remove INT requirement to become slaver (Drugs are one solution for this one): A slavery with int=1 would be talking absolute gibberish; he couldn't even give simple commands...
Quest experience boost suggestion: too easily exploited.
Possible to repair items that are on the ground: YYYEEESSS!!!