What I have seen of ENT, it has promise, but lacks 'oomph'.
Reed is definately the best character.
Tucker is the most annoying Trek character EVAH. Kicks Wesley's and Seven's butts in that area.
Scott Bakula is a good actor, but isn't been given all that much to work with in the writing department. We were promised some Kirk-like gun-ho-ness. Where is it? He's being beat up every week.
Phlox is funny! That smile rulez!
The rest of the crew is uninteresting, but acceptable. I like 'em, but ain't fascinated of them. I have a weird feeling Mayweather isn't played by a real actor, but is simply a lifeless dummy.
The promised erotic scenes, which they delievered, kinda, but it seems way too forced. Braga should watch some Farscape to learn to do 'sex-in-sci-fi'.
I like the look of series a lot. I like the suliban, while I'm not all that fond of the whole Temperal Cold War (tm) thingy, but I won't complain until I know a bit more about it. I like what they've done with the Vulcans and the Andorians the kewlest Star Trek race evah!
Overall, promising, but bland. Could go the TV-masterpiece route or could become the next Voyager. After all, VOY's first season kicked arse.
They also didn't have the chance to introduce the characters early, spin off style, which I believe is how they brought in Sisco (IIRC?), correct me if I'm wrong. They highjacked O'Brien, Keiko, and eventually even brought in Warf.
Sisko (with a 'k') first appeared in DS9's premiere episode 'Emissery'.
O'Brien and Keiko were recurring secondary characters in TNG.
Bashir appeared in an TNG episode where the Enterprise-D was dropping O'Brein and Keiko to the then-being-converted-to-a-federation-station-from-a-cardassian-one Deep Space Nine. He was fascinated by Data IIRC.
Worf was added to DS9 in season 4. DS9's producers were actaully against it, but Paramount insisted on it. They were trying to bring some of the old TNG crowd to DS9. It didn't work.
I doubt you really wanted to know that, but hey, I rarely get to be the fountain of wisdom around here.