I've read that Sanderson kept really pushing the father thing specifically because some people in his reading groups liked Vin and Kelsier as a couple. :lol
:lol Yup, wob.coppermind.net is a wealth of information! (Wob = word of Brandon.)
I'll start my reread soon.
@Stephen Lightheart is this your first time reading annotations?
Response to the spoilery discussion of Kelsier's personality:
Sorry, I don't have the source for that. I can try to track it down though.
Source.
Also, I've heard Sanderson said that if he were writing it now, he'd have more of the crew be women, not just Vin. I think that's cool.