Whilst I applaud the desire -- its one I've long held; and attempted by other means -- and especially your effort; I can't help but think: too little, too late.

To address the "Too little" part; I think any posts 'judged' -- by whatever mechanism is chosen -- to require 'some action', should be pre-fixed and post-fixed with a banner reading:

Warning: This post has been judged by the Community to be of low value; which means it could be misleading or outright incorrect. Treat accordingly!

And I think it should be applied to posts regardless of whether the viewer is logged in or not. Just because someone bothers to sign up and log in, does not mean they should be expected to have the requisite knowledge to discern pertinent posts from sundialisms.

And yes, I am very aware this will catch many of my own posts, including some recent ones that I believe gained their reps for the 'wrong reasons' -- ie. political rather than technical. So be it.

For the 'too late' part; it speaks for itself.