So since we already have leaderboards for TA score and gamerscore, why not add the option to view them by standardized score as well? For individual genres, countries, user leaderboards and overall, just as with any other leaderboard type. Judging by the ratio thread a while back, it seems a lot of people like this way of calculating score, and I certainly think it'd be interesting.
If you're not familiar with it, standardized score is the score you would have if all your achievements were worth 10G each, while still maintaining their regular ratios. You can see it at the bottom of your main stats page.
You can also read my blog post if you want to know more:
RazorPriest's blog post - The Standardized System - All You Need To Know And More