It started great, but completely jumped the rails by the end.
So, the Daleks are gone...again. What's this been, the third time they've been proclaimed extinct? Of course, we didn't actually see Davros die, so I suspect he'll turn up again with
*surprise* a whole new generation of them next season.
And Donna's treatment was depressing. She began as the most irritating companion and ended up being the best.
Honestly, I could live with all that, but the 2nd Doctor/Rose ending made my stomach turn. Where did the writers come up with that? Did they swipe it from some 12 year old girl's fanfic?
Someone on another message board said that Rose got everything and Donna had everything taken away from her.
And, if the Doctor had to dump the 2nd Doctor in the alternate universe because he committed genocide, shouldn't he have stayed there himself since he wiped out the Racnoss? I guess it's morally acceptable to drown spider babies but not kill creatures who just tried to destroy all life in the universe...
And what happened to the space police that appeared in part one? Was that plot thread just dropped?
Lastly, was I the only one who expected the Doctor-Donna to regenerate into a new companion once she began to "malfunction"?
That's how I would have ended it. Instead of having the hand grow into the 2nd Doctor, I would have had the jar burst open and the energy flow into Donna, turning her into the Doctor-Donna.
After saving the day, everyone else would have had their ending, but Rose would have returned to her universe by herself. Back in the Tardis, Donna begins to malfunction and collapses to the ground. The Doctor realizes she is dying, but, to his surprise, she starts to glow. The episode would end with Donna transformed into a completely different person and the Doctor uttering his famous "What?".
The next season, you would explain that the regeneration was a one-shot deal (leftover Time Lord energy). Not only would you have a new companion, but you would have a built in subplot about Donna having to explain to her family why she is different (not just in looks, but personality).
But that's just me...