I like that idea of unlocking regional permits by gaining local ones.
We have a regional permit section on our CMDR status panel, so I'm sure if someone has collected all the 'bubble' permits, then Bovomit (or other locked region permits) would have popped up on there by now and players would have been keen to mention it.
http://i66.tinypic.com/16k7vom.jpg
I actually think the permit only regions around the galaxy will be paid for content, and the only way to gain access and have the permit pop up on that panel will be to buy whatever content upgrade FD has planned for those regions... cynical I know, but its just what I speculate will happen. Thargoids won't be free

Well, maybe deep space encounters with them will be, but a visit to their home systems? I'm not so sure.
Anyway...
I think I only need 3 or 4 more bubble permits for the full set so I'll work on getting the last of them after Distant Worlds.. will report here if the fabled Region Permit tab does indeed get populated with Bovomit, Regor, Bleia access etc