Agreed, there really isn't much to alien theme... But something I really wish is that it'll be more than a choice between staying here in Earth or returning to home planet. I mean... it kinda seems it's heading to that direction?
And probably not returning home turns him (magically w/o proper explanation, of course) into a human and yay, saliva exchanges. :|
Or maybe they'll have something unpredictable and original? And if I dare wish - something that wouldn't relate to the reincarnation stuff. It's just not that interesting and, imho, makes the romance far less likeable. I mean, loving someone only because they seem to be reincarnation of someone else? Lame; I don't like that.
But yeah, I, too, still like it a lot... for now.