A few people have hoped that I would weigh in with an opinion.
I'm torn. I think it's really fun, but we're also a very serious project. So I gave it some thought and I have this idea...
Just for fun, why don't we have a game on Friday to create an alternative main page, linked from the main page? "Click here to see our April Fool's Page."
And on that page, we have fun with ourselves... nothing mean spirited against each other, but gently having some fun with our quirks. So yes, the feature article can be the european toilet paper page. But we also could have an article about Gdansk ^h^h^h^hDanzig ^h^h^h^hGdansk! Danzig, dammit!
In this way, we get to have a little fun with the holiday, but we also don't abandon our seriousness for the day. And at the end of the day, everything can be locked and archived and deleted, and we can do it once a year.
Maybe if a developer can be persuaded, we could set the whole thing up at AprilFools.wikipedia.org or something like that.
--Jimbo