Wait, people daydream about other things?
I have put much thought into this. Kaladin would despise my sister at first, (and give us some odd looks for living together) But I think they would get along pretty well.
Shallan would be fascinated the different species and I don't know what they would think about no highstorms.
Lift would eat us out of house and home and proceed to slide around. I think she would really like TV/Video games
Kelsier (and elend) would be interested by America's system of government.
Sazed would be ecstatic about all the new religions.
Wax, and Wayne... Uhh... I don't know. It'd be awesome though.
Lopen would have fun impressing pretty girls who don't know anything about radiance.