Honestly? Galliano.
Assuming he has issues with alchohol, they should get him dried out and then give him a second chance.
Obviously, what he said was absolutely awful, but people can often say
very stupid things, they don't mean at all, when drunk.
All this; 'People say what they really think, when drunk.', is a load of hogwash, IMHO.
In my experience, they generally talk utter rubbish (especially when goaded, as I'm fairly sure he was) and can often be, genuinely, horrified by what you tell them they've said, once they've sobered up.
A drunk person should not be judged in the same way, at all, as a sober person should be.
Otherwise, Tom Ford - he adapted to YSL very well (OK, so YSL didn't agree, but YSL was what most creative geniuses are; a control freak!), so why not Dior(?) - Gaultier, or Theyskens.
The Rodarte sisters would be a disaster, IMHO - as would Gareth Pugh (obviously) and (to a far lesser extent - a fizzle, rather than a bang) Proenza Schouler.
Lacroix (if available?) I'm neutral about. I don't think he's quite right for the house (a bit too idiosynchratic and folksy?), but I think he is (or was, anyway) talented, imaginative and experienced enough to be able to adapt. However, I doubt he'd want the gig?
I think Jacobs is probably fine where he is? As are Tisci and Elbaz.
If I've left anyone out, I almost certainly don't think they're very suitable, either!