Ive said nothing about making unable pvp in cities... I just say that a wealthier city (thats more activity) should give more wealth to the players who control the city. And in my opinion, killing players doesnt raise the activity in city, but thats just an opinion.
I also remember last season when the samartians took redding and didnt kill the bluesuits, that city was cool, it was like a 2nd ncr. Id like to see more tc factions doing something like that.
Then the whole TC system needs to be reworked aaand activites needs to be added, because standing in Redding or BH is same as standing in NCR, but those first gives you free reward.
The idea about players doing something in cities may kill the main PVP system there - TC, and only PK in New Reno would last.
As I said before, it isn't post-apo sims simulator, but a game, and you can do freely what you want in the game, raid the city, take rewards, fight with other gang for rewards, not for some noobs who will clean shit in city.
There are max 1 - 2 traders in city, so the rewards would be high as none...
And players have no opportunity to trade anything with those traders expect giving them 1000 healing powders for their drugs, so it's pretty simple why it wouldn't work in the first place.