Harvey, you're not getting it.
The show was shot on film, as was most* of the model footage I believe. But all of the post and FX work was done in video. ALL of the visual post production would have to be redone.
- So if someone fires a hand phaser, the phaser effect will have to be created newly from scratch.
- Transporter effects.
- Viewscreens, or any display readout.
- Holodeck effects.
- All of the post effects for model shots, even a simple flybye would require new engine glows.
- Any shot with a window that didn't feature the static star backdrop, even simple warp streaks.
All of this has to be created again, and that would in no way be the original