I disagree, any tangible benefit to making point chaser's clutterfarms private would purge a large amount of them.
It may be enough to stop you from listing your nicely decorated stronghold but I'm betting the majority of decorators would gladly take the hit. Like the poster below you I would personally accept a 5% penalty to stay public, and I am very much interested in the conquest points.
Like I said in my OP there is a small part of the player base (which you seem to be a part of) that are voraciously accumulating points for conquest but are equally proud of their stronghold work. My solution admittedly doesn't favor them, but there is no fix to please everyone and this is more fair (and less exploitable) than a voting system.