In terms of actor performance, it was excellent. The cast of this show obviously worked very hard to play their parts, and make their characters interesting, likeable, and especially, believable. Every one of them should receive honors, and due recognition for their very fine, and successful efforts in that regard.
In the areas of camera work, lighting, sound, and overall production values, it far exceeded any other Star Trek series or film to date.
The special effects were also superb, as was the design of the Enterprise NX-01 itself, as well as the various vehicles used by the other space-faring races.
The sets, costumes, and props were interesting, practical, and far more realistic in design and function than anything seen in the "trekverse" before or since. And one really notable and refreshing thing - They finally got the flashlights right, even though they still sometimes held them in that awkward and ridiculous fashion that started with TNG.
As many viewers had previously, and understandably, expressed disdain over the fact that such things as reset buttons, excessive techno-babble, uninteresting aliens, and lack of original ideas or individual character development plagued the previous series' episodes, the producers of "Enterprise" apparently took great pains to address those issues, and by and large, they succeeded.
The aliens were well designed, many looking far more "alien" than those in previous shows. The Xindi arc itself represented a major, and well executed effort to address viewer complaints of bland aliens and tired stories.
And as far as storytelling goes, the tales spun by the writers of this series were at least as good, and many times even better than anything that came before.
Continued...