Go with new owner for specific open team option.
Or
If there are multiple open teams, have a dispersal draft. You can pool say 2-3 teams that are open, and invite 3 people to have a dispersal draft. This gets them more involved in their choices for their team, and is more appealing to anyone new. Can even pool upcoming draft picks as well to make it a bit more attractive, since again, most teams that are abandoned are not in the greatest of shape. This really doesn't affect any one of you specifically, this is more of a matter of recruiting.
Discuss.