adding semi-stable entrances and exits to the Backrooms and Frontrooms is what usually makes a Backrooms story multiple times less interesting. humanity's goal in Wikidot's Backrooms has always been to get out of this place into the stable Earth, by adding some billion-dollar company having direct contact with the Backrooms multiverse kinda just leads, eventually, to Kane's Backrooms over and over again. why would people not exit the Backrooms now, if most of them don't live in exitless levels? and I know, articles, such well-recieved as the Woodrooms imply that humans, at some point in Hisotry, have some contact from the Frontooms into Level 0, but it is implied at the same time to be an undirect, "blury" contact and an attempt to recreate what they know, not an in-'n'-out adveture time
this tale could have worked if it was around something like that and not an SCP-like organisation that collects and studies Backrooms things, or if it was just a MEG thing or anything else. I don't really like this one, sadly
unfortunatelly, I'll have to give a -1, the problem here is, indeed, the worldbuilding