It was my impression that the Front Page was intended for things that would have broad appeal among less-advanced Perl users. Esoteric questions would be less appropriate to front-page. Things that a lot of people should know, but many won't think of, would be perfect.

If the idea is just to showcase the best of recent posts on PM, it could be automated: every two hours, the highest-rated root node of the past four hours would get front-paged. Or something like that.