After seeing the HD Disc of TOS and the vast, vast improvement on my plasma. I vote hell yes.
And I am for updating the effects as well. NOw which Enterprise the original model or the 4 foot model. I would say based on the 6 ft, with of course the change needed for any structural changes made in the 7th season (ten forward, ect).
As for 100 a set. Sure I spent that much on the normal DVD's spent more on that for the VHS tapes and more then that on the laser disc.
Hell I have been dreaming of this since seeing just the higher quality images used on the dvds for Enterprise. THe 1701D was stunningly beautiful. And that just DVD quality on HD would be even higher.