While I enjoyed regions in LG, in part that was because I happened to be in a good region (Nyrond). Other people were not so lucky. We went to a con in a neighboring region and let's just say that if it had been our home region we would not have stuck with LG. When female PCs can be kidnapped, raped and impregnated by a god-like dragon it's just offensive. That and they had a "killer" attitude reflected in their mods by setting up scenarios you could not hope to survive unless you had a special "get out of jail free" certificate. Didn't play the correct mod, or have someone at the table who did? Too bad, your character is dead and there's nothing you can do about it.
Anyway, sorry about the rant.
The strength of the regional system was that it was fantastic if you had good coordinators and support staff. However, it was a lot of work for those coordinators and there was a lot of burnout. In addition the reporting systems were a hassle (no idea what current requirements are). While the character tracking had the semblance of being "official" documents they were easy to work around if you wanted to cheat.