Re: The Role of the Companion
I remember thinking that the tree-woman in an early Eccleston story would have made an interesting Companion.
Another idea: Why can't the Doctor find Romana? Of course, it would likely be Romana III (at least), but that could be interesting, depending on the actress. Sorry, but I just don't accept that ALL Time Lords were killed in the Time War. Romana was in another universe entirely, and wouldn't have been affected by the events in this one.