I was really looking forward to the fallout. How/why she would stay in the TARDIS after all of this, a distrustful companion who knows the Doctor's ~big secret~. The problem of keeping her on could be solved with some borrowing from Tegan's story arc. Perhaps that initial damage in the last episode was enough to put something out of whack so they can't return to Clara's time, perhaps.

But no, no. A 'it was all a dream' ending is fine too, I guess.