Webster has always been worse off the bench than as a starter... there were a few horrible games a couple seasons ago when we tried starting Outlaw and benching Webby, and both of them simultaneously sucked. It's kind of like how Batum started at first only because Outlaw bites as a starter (funny how Roy knew his best friend's limitation then and didn't hesitate to endorse Batum... so much for Roy coddling "his guys").
I'd let Webster or Rudy start a couple of games in place of Blake. If it's Webster, Roy can be an SG again. If it's Rudy, then Roy's still the starting SF, but you have a more potent offensive threat than Blake at his side, and there won't be confusion in plays where Andre's acting out the SG part and getting stuck with jumpshots Roy or Rudy should take with time winding down.