Some people complained about the long effects scenes, including the
Enterprise reveal, even then. It IS too long. It's too long in part because they show too much of the ship through the dock from the outside, and there are shots like the inexplicable slow pass on the hexagonal lighting unit which should have been tossed on the cutting room floor and stomped on.
Agreed. It's an over-long scene in a movie consisting of overlong moments.
Length ≠ profundity!
The problem here is one of dramatic tension. The presence of the ship is teased, with glimpses through the dock structure, until finally the big reveal.
And then... another four minutes of the ship, no suspense, nothing new revealed. At least with the V'Ger flyover there is a sense of venturing into the unknown, and possible imminent attack, to give some sort of emotional interest.