Just a few points I've noticed re-reading...
On a general point I would alter any reference to respect or love for the 'franchise'.
I appreciate that in modern parlance franchise has generally come to be seen as referring a series of films, television shows etc and related material but strictly speaking it refers to authorised distribution and selling.
Seeing as our main beef is with the authorised versions not being the original films we want to see, it would make sense in my view to change that to respect and love for the films themselves and drop all reference to "the franchise".
On the Guardian article page there is a line seemingly describing OT.com and the petition as not being user friendly or detailed.
I think you meant in the context of getting information about the history of the changes to the films and the attempts to conserve them and not at all in reference to the petition or the forum itself (as just a forum).
The information on the front page of the site is a very reasonable primer to the issues and the petition is easy enough to sign. the forums are as user friendly as most forums are (more so compared to some I've been on).
Reading that line as it stands makes it sound like the site and petition isn't very user friendly (which may put some people off joining up and signing) so it could do with a little adjustment for sake of clarity.
On the Theatrical Sound section in the second paragraph part of a sentence reads "excepting the two-decades-out-of-print".
I'd alter that to "except for the two decades out of print"(if you want to add emphasis underline it, the hyphens look strange rather than percussive).
On the Fan Preservations section paragraph three the part of the sentence which reads, "Laserdisc had barely died in the United States".
That doesn't really say what I think you mean it to say.
Please correct me if I'm wrong but don't you mean 'Laserdisc was already on the wane in the United States' (or however you want to word it)?
The original line suggests the format was already dead but only for a short while where as you seem to be suggesting with the rest of the text that the format had peaked and was in decline at this point.
I'll let you know f I spot anything else.