This isn't a bad idea, but... I'm skeptical that it'll do much of anything when it comes to decreasing the number of low-quality questions here. [It certainly didn't do much for Progse](https://softwareengineering.meta.stackexchange.com/questions/5377/requiring-registration-to-ask-questions-did-it-made-a-difference). 

As you say, every little bit helps, but in this case it could end up hurting [almost as much as it helps][1]. 

IMHO, the best reason to turn this on is simply to reduce the amount of confusion and support that unregistered users tend to generate / require. That's not something to ignore - as one of the folks handling support requests, I certainly wouldn't mind seeing fewer of them - but it's also an issue that could be and maybe should be addressed in other ways; if nothing else, it's a separate discussion. 

So I'm marking this "deferred" for the time being. Let's [try something else](http://meta.serverfault.com/questions/5850/should-folks-have-to-click-through-an-interstitial-page-to-ask-questions-on-serv) first, and see what (if anything) happens as a result. We'll revisit this idea on down the road. 


  [1]: http://meta.serverfault.com/questions/5838/how-many-bad-questions-come-from-unregistered-users-versus-registered-users/5839#5839