Isaiah is absolutely a starter next season and probably the season after. However, as he ages into his thirties, I hope his attitude about coming off the bench changes regardless of salary (Quick sidebar: I think we should pay IT. We can't lose him as an asset and we wouldn't get proper value for him if we traded him).
I'd much rather see him eventually follow in the path of his mentor, Jamal Crawford, who embraced the sixth man role than his idol, Allen Iverson, who rejected that idea and fizzled out in his early thirties.
PS. Somebody needs to photoshop IT Came from the Bench onto a 50s style sci-fi poster a la
It Came from Outer Space.