Why are you so adamant that this be incorporated into Bitcoin, rather than a block chain of your own design?
There are people who like to improve the game rather than just run away and play their own game.
It's pretty obvious that few people (if any) other than you and bji want this "feature".
Then I respectfully invite you to not participate in this thread anymore. Seriously, it's not doing any good. And for the record, while I agree with ascent's assessment of the problem, I also believe that it is not likely to be an issue for a long, long time and am personally in no hurry to see any solution applied at the moment.