It really should. In fact, everything aside from balls and strikes should be reviewable. Give the manager two challenges just like in football. If you're concerned about it making the game too long, then change intentional walks to 1 pitch instead of 4 and stop granting time to hitters every single time they ask for it. It is nice that by the time I finished ranting about that call, CC was already out of the 4th.
This is what I was talking about. Beat the living piss out of them tonight. Make Thursday's game elementary against a depleted pitching staff.