I've always been conflicted on REZero... it's a beautiful game with an interesting and unique hook, but the storyline is just terrible. I admit, though, that could be colored by my sheer hatred of prequels and their tendency to ruin some of the mystique of the things that follow them. You know, like how Rebecca still seems skittish in RE1 after she's already been through a gigantic ordeal that actually seems worse than the mansion incident... but, you know, hey.
So, basically, I've always wished that this game was wrapped around a better plotline, or actually making it what would have been RE4 (technically 5).
Truth be told, I could never hate the last gasp of RE's survival horror roots too much, so it usually gets a pass from me.