Finally got New Vegas and was wondering if there was any easy way to compare large balance/gameplay overhauls like Fook, Arwens, Fallout New Vegas Advanced Version, HarderCore, some other overhaul I don't know about.

ATM it looks like FOOK is more about adding variety and additional items/content rather than balance/gameplay, anybody have ideas as to when/how FOOK will approach this part of the game?

Would Arwens/hardercore/FNVAV be compatible with FOOKs current item/armor/weapons if loaded after FOOK?

FONVA's key features like six hands and out of combat auto-regen will function with any other overhauls. Other features of FONVA are the basic things that most overhauls are going to do like rare ammo, chems have weight, ect....
All of the plugins for FONVA are optional so you should be able to run Fook for example perfectly fine with the Six Hands limitation.