Enterprise was bad for many reasons. Mainly for bad writing, and stale cardboard cutout acting. Most of the episodes seemed half assed. As in nobody had any motivation, or didnt give a damn if it came out good, or not. In contrast The original series actors especially Shatner way overacted, because they wanted the series to be a success. Plus Berman, and Bragas complete disregard of the shows that came before ENT. So there were MANY inconsistencies. They were trying to make ENT into a reboot of Star Trek without telling anyone. The "killer B's" as berman, and braga became known as said if they had their way the Original Series would never have existed. That sent old school fans into an uproar. If it wasnt for the original they wouldnt have had a job.
They AGAIN excessively overused time travel plots like they did with Voyager with the "temporal cold war" thing. The Xindi wars were a farce. With the kiler B's time travel, and technobabble save the day. The only credit i give is in the 4th season when Manny Coto tried to salvage the series, and make it somewhat consistent with the rest of Trek. The 4th season episodes are the best of the series IMO Especially "mirror darkly". If Manny hadnt come into the picture ENT would have only lasted 3 seasons, and it went out with a whimper. The last episode of ENT is typical killer b material :/
Artistically Enterprise was ok. The NX was a ripoff of the TNG akira class, but it was stil a nice ship. Other than that i liked most of the ENT ship designs.
There is going to be the 1701 in my mod.. no bloody A,B,C,D, or E

If sins is as moddable as i think it is there could be many possibilities for trek mods.
How the TOS mod turns out may depend on Star Trek XI since that movie is set in the TOS era. If the movie is good ill have more reference material. If it is bad..like nemesis bad, ill just ignore it like it never existed.