I'd be kinda worried if HTC made it, to be honest. I've had and seen a lot of issues with their phones, recurring ones being dead pixels and signal issues. I think I'm just really unlucky though. I'd like Samsung to do it because I felt the Nexus S design was really sleek and I loved it's SAMOLED screen, but I don't think Google would double-dip for it's Nexus manufacturers. Motorola's getting too arrogant while not bringing much new to the table, and I've lost all interest in supporting them (sad considering they used to be my favorite manufacturer), so I really don't want to support them even by buying a Nexus (but I will, because it's a Nexus
). Considering LG's IPS screen technology, even though they haven't proven themselves much yet, I'm much more inclined to want them as the manufacturer over HTC. I don't feel HTC has much to offer, especially if they don't give the Nexus any design distinction from their other phones, which all tend to look very similar to each other.
(Also, no one's really mentioned them, but I'll just throw Sony Ericsson out there with an 'I will never support anything Sony until they apologize for taking features from paying customers and then suing the heck out of people that try to put them back'. That kind of thing, even if the divisions are only linked by a parent company, does not compatible with the Nexus ideology or "Don't be evil" make.)