HBO and Showtime are too adult-skewing
You said it, thats just what we need! A trek centered around relationships with lots of softcore sex scenes :P
Our resident jokers got it right, we'd end up with ENT.

Let's face it, romantic entanglements are not Trek's strengths. As much as I'd enjoy seeing some fanfic scenarios played out on TV, especially now that Kirk and Spock are young and hot again, Trek should just stay away from that whole topic and play to its strengths. PG-13 forever!