This reminded me of a thread I started way back when - some photos on ckmac.com (now defunct) showed a
Videodrome 30x40 with blank borders (no NSS text). I thought it was strange, possibly fake, etc. but didn't want to ask the question on the forum just for someone to snag the poster before I could buy it haha, but eventually I started the thread just before buying it. I think the photos were edited somehow with the white balance off or something and that made the borders look blank. Since then I've been lucky to acquire a few 30x40s and it's one of my favorite formats.
Back to the question, it would be interesting to see if the same process with the minty white inserts could be used to make 30x40s someday. I think it's possible, but the more years pass, the more difficult it is to pass something that is so new looking. Most of the 30x40s in my humble collection are very good to excellent condition, but they're definitely not mint condition. Some folks probably could age the paper somehow, and try using stock, printing processes, etc. similar to or the same as the originals, but who knows how authentic looking they would be to folks who have experience with this format.
Link to the thread mentioned above:
http://www.allposterforum.com/index.php/topic,678.msg8174.html#msg8174