I can understand the need to keep things under control and nip problem trends in the bud based on the experience at SO and other graduated sites. While [tips] questions strain the discussion/list criteria, at least they're tidy if confined to one-per-language and all tagged.
But questions like "Hello World in 1024 chars" and "Creative Programming"; even though they attract riff-raff, they attract valuable contributors as well. Many of the 'historic' closed list questions on SO have massive votes and stars. But if we're too trigger happy, few participants can get into the history books.
Would it be possible to have a special [fun] tag, where say, you need a minimum rep to post (do some work first), and a restriction on frequency of usage (you've had your [fun] this month)?
And CW. (Have Cake+Eat Cake)
