How can I build Deathtrap to make him the least annoying in team play?

Deathtrap can be annoying; he blocks shots, he can't be recalled and he has a tendency to go for melee attacks, drawing targets' aggro. This is particularly annoying in team play as I've noticed he'll either steal kills or aggro away enemies coop partners could use for Second Winds. It's also hard to shoot a target when you're down, your accuracy is low, and Deathtrap is right there between you and the target.

Which skills (if any) can I use to make deathtrap more of a "team player" or at least draw less aggro? I've noticed for example One Two Boom doesn't appear to draw aggression. Do long-range skills of his draw less/no aggro? His distance attacks certainly seem less in-the-way, so I assume that's a big part of it.