Many people had the reaction of dismay when James Earl Cash didn't appear in MH 2. But the point was....James Earl Cash's story was done. It was time for a new story, and a new character. And, the storyline of Daniel Lamb was just as good as James Earl Cash was. And it was different, which isn't always a bad thing.
Jimmy's story is done. Where does he go from here, gamewise ? He beat the Cliques, beat the system, beat the crazy fucked-up bad kid, became King of the School.....What could top that ? Bringing him back to beat the missions, pass the classes, earn the respect, all over again would be redundant.
And we have already explored the Bullworth Academy and the Towns. I can navagate the streets in my sleep. So I want to pop out $60 just to return to the same place ? Naw, for that kind of money, I want a new place, a new story, and new characters....Not a re-hash.