I actually think the loss of Marble isn't as harmful as most. I think we will play more as a team, and other players will have to step up instead of just deferring to Marble. He's also not a big loss on the defensive end.
The offense of Marble has been argued enough but I actually 100% disagree with you I'm regards to his Defense.
He's our best man to man wing defender and averages something like 2 steals a game... (That's a guess).
What in the world makes you think we won't miss him defensively??
Given Fran's affinity for the zone any player with some length such as Uthoff can replace Marble. If we played primarily man to man defense then I agree we would miss him more. Marble is solid defensively but he's not a lockdown defender like May was.