We don't know yet what quests will have an impact in Dragon Age: Inquisition. SPOILERS BELOW!
"Who Needs Rescuing?" is kind of a funny quest, because by the time you get there, the girl has already been "rescued" by Feynriel, that half-elf dreamer you sent to Tevinter. And by "rescued," I mean he used his powers to drive the girl's kidnappers insane and kill each other. The girl, who's now in love with Feynriel, runs off talking about how she will try to find him.
I'd be willing to bet Feynriel will show up in DA3 with his new girlfriend, but like I said, I don't know for certain. It probably won't matter.
By 'kind blood mage,' I assume you mean Gascard Dupuis, who you meet at the start of Act 2. Gascard actually plays a role during All That Remains, that quest where you try to find your mom. If he's alive when that quest starts, you can go to Darktown (you'll have to search for him a bit) and ask him to perform a blood magic ritual that will help you track down the mage who kidnaps your mom.
MORE SPOILERS!
If Gascard goes with you to Quentin's lair, you'll find out he's actually not so nice after all; he's really Quentin's old student and he wants to kill his teacher so he can steal Quentin's research. Quentin will offer Gascard to come back as his student. Hawke can either talk Gascard into fighting Quentin or just kill him. (Varric might also kill Gascard if he's with you.)
And if he's still alive after All That Remains, you can go to Darktown again and meet up with Gascard. If you have Fenris or Aveline beat him up, you can learn he lied to you about having a sister. You can then kill him or let him go.
Gascard might show up in DA3 if he's still alive, but there's about five different ways to make sure he's dead.
Modifié par Face of Evil, 18 juin 2013 - 08:37 .