Maybe it's because I don't have a horse in this race, but does this really matter to anyone? (rhetorical, I suppose...it obviously matters to some, though I can't see why) If a course in Florida is ranked below a course in Oregon but above one in Kentucky, and some undeserving course in Texas or Minnesota or North Carolina somehow sneaks in with a higher rating, does that matter somehow other than ego points? Is a course somewhere losing funding because its rating is no longer top 10 on DGCR? Or is the disc golf tourism industry somewhere suffering because Selah is ranked higher?
Maybe a solution would be to remove the "top ten" list altogether? I currently feel like the rating system is pretty good for what I think it's supposed to do: 1) help me figure out which courses are better in a geographic area, and 2) help me figure out if there are "good" courses in an area. I'll search for courses in an area, sort by rating, and then look at reviews for ones that stand out.
I haven't played as many courses as many of you, but I have never encountered a course where ratings seemed unreasonable. If one course is rated 4.7 and another is 4.5, to me that is pretty much equivalent.