Allowing mini reviews on local providers would litter the regional boards with shills. That would encourage lazy hobbyists to put up mini reviews and not post a full review as required.
As far as fakes, penises and ROBS, they can already be posted on the regional boards and they do not fall under the mini review category.
BTW, nomads don't usually have homes. Touring providers do.
The policy as it stands allows for mini-reviews of Nomadic providers. Yes, I said Nomadic again, because I have watched the faces, the names, the area codes and so forth for years, and there are a great many girls who never seem to spend a majority of their time in any specific place. They might own land, a trailer, a dollhouse, an unemployed X-box welded grunting dependent who used to be a boyfriend might live there, but that doesn't matter from this end, does it? Of each thing ask, what does it do? They move around. Nomadic, and often, in packs.
In regard to the policy being sound, as I noted, it makes an exception for non-local providers. You posit that the policy is sound and prevents a flood of shills and the avoidance of review writing. How is there any difference whatsoever in the amount of shills or review writing avoiders between the guy who visits the girl at Motel 6 in the 707 area code from the 619 area code or the 415/510 area code? If anything, the pimp is going to write the shill in that case, like a form letter, as they move through areas. The policy as it stands does not serve to prevent the most obvious promotional agent, but instead, promotes him to elite status. It favors the "manager/promoter" of ill-repute at the expense of honest joes sharing timely safety and quality information so that honest janes can feed their cats, kids and whatever else attacks her when she falls through the door at the end of the day.
Rather than this outsiders only approach, why not simply explicitly limit the format to a specific length or set of details, or better yet, make a modification so that they exist only long enough for a review to clear and become visible.
