The problem with 'punishing' Vettel is that while I really like Webber, he's an underachiever, even when left on his own. He's nowhere as terrible as Massa was in 2011-12 and while he does do some great qualifying sessions he tended to mess up his starts, sending him back in the grid and giving him an uphill battle for the rest of race. Vettel on the other hand is hard headed, competitive and a lot more reliable race to race.
Any punishment RB gives to Vettel will reduce Vettel's chances to win the WDC but also Red Bull's chance of winning the Constructor's title.
I think Vettel's punishment is a fairly unanimous drop in respect from his team, his fans and his peers. Unfortunately that won't last too long, but it would be nice if Vettel found a way to redeem himself but hypothetically speaking I doubt anyone would really be pleased if In a reversed situation, Vettel let Webber pass.