On the plus side, the constant change means that if you *don't* like a character, you can take comfort in the knowledge that they won't be around to bother you much longer.

And, hey, recently we've gotten Sarah Jane and the Fifth Doctor and the Brig back in various ways, and they were long gone, so it's not like "they left" means "gone forever".

(Srsly, if this were any other show I would be constantly heartbroken by the character turnover rate, but....somehow I'm not and I keep trying to justify that to myself because I don't understand it! *flail*