Re: What would a half-Andorian, half-Vulcan child look like?
Yes but if they hadn't made Betazoids powerful telepaths in the first place, they would not have needed to make Troi half-human to put the genie back in the bottle.
I'm curious. I remember that in some of the novels I've read they could read people's minds, but was that really established in the show? I don't remember TNG quite so clearly but I always assumed telepathy worked just among themselves and other telephatic species. You mean Lwaxana could have read Picard's mind (as in full thoughts, not just emotions) at any time?
What if it's a smart fungus?