How about a Josy Wales game?
Or at least as close to it as Gun can get.
I've been thinking (in the half hour since I posted that Thomas Jane would be needed for the sequel)why do they need the original character?
Could just as easily pass the title to a new character like GTA has been doing. And the Josey Wales books and subsequent movie were some of the best westerns ever.
Cole could retire to a ranch and allow someone else to take the mantle. Or have Cole be the sheriff in Empire City that needs help from time to time.
I dunno, just tossin ideas out there.
"Do you have any fruit?"
"This one has purple stuff in it....Purple's a fruit."