^^Agreed.
They could have had seamless branching to the additional material in 480p with a note to the viewer that the material was not available in 1080P.
It has been done before when the studio wanted to include something but they only had inferior prints or even 16mm prints (as was done to restore the original King Kong)
If you look at the additional material from TWOK you can see it is in great shape, so it would have been only the resolution that was affected--not dust, dirt or scratches.
As for the first peter preston scene..........
Really if you watch that scene, it is only his final line, ".....and if the Admiral can't see the facts for himself--he's as blind as a Tiberian bat!"----that is really clunky.
They could easily cut off the line at the point where he says, "oh no, this is the finest engine room in the whole fleet.....!"
But Meyer was ordered to cut it completely and probably wasn't interested in doing a fine tuning when he did the TV version 3 years later.