Yeah. It would certainly tick all the boxes of sad and significant. I'm going to file it as a possible.
But, Oh, I don't, I'm not keen for a couple of reasons - it's a bit limiting in terms of the whole Doctor Who story. One of the things that drives me nuts about some of the Rose stuff is the sense from some people that they couldn't imagine a life beyond that.
If the Doctor knows he only reveals his name at death, then he knows she's seen him die, and it's all a bit stunted. I'd like there to a be bit more ambiguity about it from his perspective; it's a big enough dramatic kick in the balls to have seen your wife die before you've even met her.
The other thing is that I honestly don't think it fits with Alex Kingston's performance. I thought she was fantastic, and bounced off Tennant really well, but you damn well know that if they ever re-introduce River, you're going to see the pain of his memories clearly. I suppose you could make a case for it from the bit when she doesn't let him read the diary, but I'm not convinced.
Ah, geeky pendantry. Nothing like it.