Getting rid of an unwanted villager = more possibilities, more surprises, more FUNNN
I actually don't want to get my dreamies yet, because then I have less room to meet everyone else. I think I would just get really bored of my game if I got all of my dreamies and never changed them. Plus, I'd have to be playing constantly to make sure that they didn't move, and I don't have the time. :/
They'll come in time.