Feels unfair to Forbes, who reasonably planned on a 8-9 man rotation with Monsanto, Ituka, PFred, and Marsh coming off the bench. Not his fault what happened to the first two guys, and PFred was a resounding success this season. There's even room to stretch that a bit further with Keller/MMM in spots.
As far as the guys on the bench go, the only one I place blame on Forbes for is Marsh. I think it's reasonable to say that coaching should have made a huge 7'1" guy more serviceable than what he was this season.