Great thought, Leif! Once upon a time, WikiTree had a Profile Of The Week feature, created to seek this objective. Members could nominate a profile to a committee, who would then select a winner each week, based on content quality and presentation.
Eventually, it grew to have political undertones, with personal favoritism rumored as the winner selection basis. Also, a lot of the "eye candy" (fancy stuff using more advanced coding) was being prohibited by new rules about what coding we could/couldn't use in an attempt to unify the look and feel of WikiTree profiles and make it easier for non-geeks to edit them, since this is a wiki.
It evolved to the Collaborative Profile Of The Week, with a specific profile selected in advance to be improved by everyone during the week, after which it could be showcased as an example WikiTree product.
I don't remember when that ended, but I like your thinking and agree that a way of showcasing profiles in which we take pride would be a very good feature for us to have.