It's not necessary and it only gives her team the idea and feeling it's only fair if they do the same thing.  Obama can't win the GE without votes from most of the people who voted for HRC in the primaries.  I understand the feelings you are having.  But I rec keeping a lid on it - while watching Obama work his Tai Chi - Kung Fu - Akido - Jujitsu - Poker brilliance on the remainder of the campaign.  Trust him a little more.  He's no dummy.  We will do all we can to support his efforts (donate, phonebank, door-to-door, signs, blog, etc).