I would happily part with a months salary for fullscreen HD DS9 blu rays.
I'd be in the queue, just ahead of you.
To forecast potential customer base is easier than TNG. TNG gave an insight to the hardcore fans who bought on day one*. All things considered, I'd guesstimate 80-100% of TNG home video buyers would buy a DS9 remastered season. So take the price of remastering the season and divide into projected sales figures. The cost would be higher than TNG, keeping in mind that if TNG was twice as popular as DS9's best days, there's already a smaller gross audience before trying to guess net audience two decades later - ands keeping in mind most harcore Trek fans are more likely (but not always going) to embrace every incarnation regardless... but TNG was a litmus test of sorts, which probably didn't look at all available factors but I'm not going into tangent territory right now... hmm, where'd that loud appreciative studio audience clapping noise come from all of a sudden?
* Most TNG blu-ray purchasers (on day one, not a year or several later when prices plummeted) would be paying the most back into remastering costs. TNG day-one purchasers often paid $60 to $80, half or 2/3 the MSRP - and keep in mind the 2002 releases at shelf price were $120 a pop (and shelf price is always lower than M
SRP), so day-one buyers already had it pretty good and many just didn't understand or value the work done, which was extensive and the documentary only can explain so much. Never mind that season one TNG is not exactly the best and people who did splurge may not have kept going until season 3, when the last of TNG's growing pains ended, even if the worst ones got dealt with during season 1 and don't mind the writers' strike that cobbled more of season 2 than I'd originally thought...
The problem with opening up "protected" photography is that you end up with a lot of scenes where the characters cluster in the center unnaturally. Still better than cropping, but I always prefer OAR.
Not the pilot though, evidently*. That had to be cropped down to 16x9, resulting in some awkward framing.
*If it was shot protected, they still used a 4x3 version cropped to 16x9 for release for some reason.
Which was great in 1960 when many shows were filmed and broadcast as "televised theater" but even by the 1990s it was obsolete as production methods had expanded into more "natural poses" as opposed to the clustering. Liking the content over its presentation helps but the natural poses, more natural dialogue such as interruption of characters by characters (or klaxons, etc), were a step up - even as a kid I could tell that characters griping about something then pause then another actor started to talk seemed off, but revisiting as an adult only showed how stagey the attempted at "argument drama acting" all looked. And, again, it's not 1990 anymore. Trying such a cluster probably won't work for many audiences no matter how robust and engaging the underlying plot actually is. Not all, some in the older generations might not notice or be as concerned... depends on the mindset, there is rarely a 100% truism...