If it was me, in real life, I would recruit Sten, because I wouldn't bear the idea I left him in cage for darkspawn. I would also recruit Zevran, though I'd probably keep him tied/under control for some time, for several reasons - I wouldn't kill him in cold blood after the interrogation, helpless and wounded, but I wouldn't let him just walk away free either. And I believe in second chances.
Also, both he and Sten are the only really skilled warriors/soldiers.
I probably wouldn't recruit Leliana. Yes, she later turns out to be okay, but I wouldn't know that in Lothering. A nun who fights like her, who just happens to appear right at the moment with Loghain's soldiers, saying the God told her to help me? Only an idiot wouldn't find it suspicious. For all the Wardens know, she could be anything from a spy to another assassin.
I also wouldn't r3ecruit Oghren. He's a drunkard. I wouldn't want him around. Same goes for Fenris. I hate drunkards and people with weak minds who wallow in self-pity.
I wouldn't Loghain. Ever. A general who cost the country half of its army, caused a civil war without thinking of the consequences, and sold the citizens into slavery, but refuses to take responsibility? No thanks. Although, in real life, I wouldn't kill him directly at the Landsmeet, I'd imprison him.
And... honestly, I don't think I'd have patience to babysit Alistair. I'd kick him out after the first tantrum. Okay, maybe after the second. I'd want someone reliable, who would support me (he's the senior Warden and a man, after all), who isn't afraid to take responsibility for his actions. Alistair is none of that.
I would also kick out Velianna in Awakening and Anders in DA2. Maybe also Merrill - her naivete was amusing at first, but then I realised she remained that stupid for whole 7 years... she's a simpleton who requires a constant care of others, yet refuses to listen to advice, until she causes tragedy.