Watched and subconsciously realized that something is wrong with our selection of "What's Hot"... Hot topics frozen :-)
I propose to form this set similar to the forums, that is, if the idea of adding comment or voted for it, then pick it up at the top!
IMHO, this is the easiest and best way to formation of hot ideas - good ideas will sometimes climb up, and people, who do not often come to the site, can see them and voted. Then they will see really important for us and priorities.