I don't think I agree.
I'll take the HD live action/SD CGI version, if it becomes the only way to release it.
However, things like phaser shots and Odo's morphs must be redone. I essence, most mixed live action/CGI shots.
These are simple and relatively inexpensive things to do, I believe.
They did it all the time in TNG.
The big fleet battles? The CGI looks quite good even on DVD so upscaling it wouldn't be much of a problem, I believe.
Bigger problem would be things like complex effects sequences being shown through the viewscreen, but such shots are a very small percentage of the show, I would be okay with them being upscalled as well.
I'll take a 90% HD release if that's the price.
Hell, they did that with the first two seasons of Enterprise in Bluray and it looked quite alright.
My comment was based on the notion that
all of the CGI would be upscaled. Things like phaser blasts, transporter effects, and Odo morphs are exactly why I wouldn't like a hybrid remaster - they are frequent and would look very out of place.
If those things are redone in HD I can't see it being that much of a stretch to just do the rest of the effects in HD too, even if it's just a rerender.
Phasers shots, transporter effects and Odo morphs are, most certanly, considerably less expensive to redo than fleet battles.
Specially since they would mostly reuse what they already created for TNG.
Even the Cardassian transporter effect was recreated for TNG.
Regarding Odo's morphs, there's that changeling like monster from Aquiel, they could probably use the same software.
So I do believe there's quite the difference between those kind of effects and the more complex space shots.
At least difference enough to make one thing cheap and the other not so cheap.
Or would rerendering be something relatively simple? I honestly have no clue about that.
They would have to find the files though, some might have been lost.
Frankly, in the end, I think I agree with the following sentiment:
To be honest, at this point I'd be happy even if they went this route. Sure, having the effects in high-definition would be truely glorious, but most of the live action material is so dark, murky and blurred, that it would be a treat just to have that rescanned. Especially when it comes to the first two seasons.
The improvement from having only the live action sequences in HD would be huge, and even the upscaled shots would look better than the DVD.
So bring it on, if it must be that way.