Personally I think if they had moved the NM's that dropped the KI, away from the higher tier NM's spawn point to begin with you would have avoided alot of the same congestion you have with them now. At the very least, parties would leave for a moment persuing different NM's allowing others to spawn said NM's.

However, it's not perfect but SE introduced different ways of obtaining both seals and KI's. Every seal will drop from at least 3 different NM's, each +2 item will drop from at least 5 or 6 different NM's now, and PI and KI's for most of the more heavily camped NM's and the megabosses can all be obtained from gold chests. After a point, you don't really don't have an excuse other than you were unwilling to persue a different method for getting your seals, +2 items, or KI's.