There's a limited audience for any show that is set in space, and such shows are expensive to make (unless you want an ugly result, which would be unacceptable to the audience for space opera).
Unless you set it in an ugly part of space... just thinking out loud here.
As for how I would like to see new Trek. I'm not sure I necessarily want to. If they happen to make a new entertaining Trek series, sure why not. But it doesn't have to be Trek. As far as I'm concerned it wouldn't even need to be space opera, but it would be nice. I'm probably one of a handful people who actually enjoyed watching SGU.
For now, I'm happy with Trek as it is. The first Abrams movie was entertaining enough and made me feel that now, after having introduced the characters, we are ready for the real thing. Bring on the sequel!