I suggest have a Godfather crew in every city that has no Godfather at the moment, and to become Godfather your crew must challenge the NPC Godfather crew and win to take over. Instead of making up stories that you have killed someone to become Godfather. :D

Good idea I'd say :)

Is there not a NPC GF to kill if you wanna be GF anyway? And I also believe that when opening up a new district, you have to kill a group of durdens, I think.

I don't know if there is, I'm new to this game, But what I meant and would like to see is a battle of a Crew that's trying to become GF with an NPC GF's crew. Which would also be available for the public view. 

Ty, this happens upon the opening of a new district (see here).

If there are no Godfathers in a particular city, then it stands to reason there would be no crews within the city either, so if this suggestion was to be implemented then a crew of 11 (since I assume rising to GF would be the action that initiated the NPC attack) would require to move to the unoccupied city with a new HQ and little fortification.

I know from experience that the 'new district' NPCs are very tough, so I would expect a single crew would take weeks depending on the gun strength to remove the GF NPCs (since only the people in the new city can attack these NPCs), not to mention the chaos involved. Personally I dont think it's required as the NPCs take out a lot of BGs and the last thing a new GF needs is further financial burden on top of the organisational headaches and whatnot.

Admittedly there is quite a lot of conjecture in there, but those are my thoughts on the matter nonetheless. Hope it helps.