Its been about a month since this change was made. No one has fixed it and no one has commented.
My .02 is that having talkgroup categories by agency is a good thing, however any of the talkgroup categories that are segmented by regions should be further broken out. For example, VSP would be broken out into at least 7 levels and DGIF would be broken up into 5, etc.
Since the databse allows you to add a lat/long/range to a talkgroup subcategory (and scanners can use this information) it would be approprate to sort and geotag them correctly.