GT5 Leaderboard Suggestions

So, what do you guy's think the GT5 Leaderboard should be like? Currently, there are two leader boards, one for stock cars, and one for "tuned". Personally, I think the "tuned" leadboards should allow for the use of personally tuned cars, rather than the "pre-tuned" cars we were treated to in GT: HD.

What is everyone else's take on this?
 
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