Personally, I think that it was a big mistake. They had really developed the original Star trek universe in series like TNG, DS9 and VOY and then all of a sudden they throw it away and we got a series which didn't even look as a pre-TOS series more like an "after Voyager" seires but with bland characters and dull stories.I felt that Trek at that time had been pretty much been saturated with the 24th century after three 7-year series, and that choosing a different era was a good idea. I just don't think ENT was all that it could have been.
Even worse that we have got all those "TOS-wannabee" stuff in recent movies and series.
I actually love TOS but the attempts to create "retro-TOS" series and movies have just been bad.
Not to mention that I miss the 24th century with all the species and characters from that era, not to mention all loose ends which could have been followed up.
I still remember when they started to debate what would come after VOY. There were some interesting suggestions, like one about a Starfleet Academy series which looked interesting.
Then there was also a suggestion about a pre-TOS series which was discussed.
"Oh no, not that one!" i thought.
Imagine my despair and irritation when they did choose that option.
I do think that I started to realize that all the fun was over. And it was!
