Enterprise was a good premise, but I didn't like the temporal cold war, and the Xindi story line. Also, it seemed like things progressed too quickly, like they didn't really want to do an early Starfleet/Federation story, and wanted to get back into TNG or something.
I can understand that but I think the progression was handled pretty good personally. Transporters existed but where not used for humans, except in emergencies. I thought that was a good "toe in the water" step toward the familiar Trek Tech without jumping all in. Same with weapons / shields.
Not to be argumentative, and it's been a while since I've seen it so I may not remember everything accurately, but it seemed like once they used the transporter in an emergency, they started using it a lot more. But beyond that technological approach, it seemed like they interacted with a lot of alien races earlier than I expected, with a Klingon being on Earth in the opening episode, and encounters with the Romulans, etc. Part of that is because of sticking with what was established in the First Contact movie, where the Vulcans came to Earth, and I didn't really like that either. I think the original series implied that Earth had gone out and encountered a few races, established relations, and then expanded from there, and it was a slower process.
For example, I got the impression that the Romulan war was with Earth, not the Federation, so I thought Earth was more isolated for a while. There certainly could be a Earth-Romulan war in the situation in Enterprise, but it just seemed to have a different vibe than what was implied in the original series.