OK...
Well, "Let's Kill Hitler" turned out to be "Let's Shove Hitler in a Closet and Ignore Him While We Fill In More of River Song's Backstory".... What a confusing mess. So many interesting things and ideas introduced - and then dropped along the way without any fuss or comment. I can't sum it up any better than
The Flick Philosopher, so I won't.
You know, I think I've finally had it with River Song. Nothing against Alex Kingston, but the character has gone from a bit of over-the-top silliness to being downright "What else is on?" annoying. Can't wait until she finally leaves.
One other bit of annoyance is that they pick and choose what stuff from the Original Series to call back, ignoring whatever doesn't fit their "idea" of The Doctor. There's a quick bit in "Hitler" where The Doctor cries out to the TARDIS as it is showing him his previous Companions, "Show me someone I haven't screwed up yet!" (or something to that effect).
Right, then!
* Barbara Wright and Ian Chesterton: Returned to Earth via a Dalek time travel device, left happily. From the looks of it, they had fallen in love over the course of their travels.
* Steven Tyler: Left of his own free will to help a society rebuild after he and The Doctor stopped a long and bitter war.
* Ben and Polly: Happened to wind up back on Earth the same day they first met The Doctor, so they decided it would be the best time to bid him farewell. Left happily.
* Jo Grant: Thanks to The Doctor's influence, went from being a stereotypical blonde ditz to an aspiring scientist and adventurer.
* Romana: After her "graduate studies" with The Doctor, left to help the Tharils in E-Space. Eventually (in the books and audios) became the President of Gallifrey.
* Nyssa: Though The Doctor couldn't stop the "killing" of her parents by The Master, or the destruction of her home world (also by The Master), she eventually found herself and stayed on Terminus to help find a cure for Lazar's Disease.
* Turlough: Thanks to The Doctor, he matured from a snotty schoolboy into a young adult ready to take his proper place in his home planet's society.
There you have it. Proof that The Doctor *doesn't* screw up everyone he meets.
By the way, here's a very nice essay on
"How Doctor Who Became My Religion".