You can also make minor changes to site in Preferences. Or atleast some options to change if you click Editing and Misc. tabs. Nothing major tho. I changed to Monobook myself because the huge tree of doom was such an eye sore. Wish they allowed option of going back to old setup still. Normally I'm acceptable of change, but when comes in a manner that actually benefits me. This seems just benefit them really. Maybe I'm being old fashioned, but I loved the site navigation that use to be on right, it was so easy find what pages I want. Especially with the search system on their being such a damn pain.
I'd say if enough people avoided using this site it might give them second thoughts to their huge changes, but then again we really don't have a decently made site worth going to. I was never big on Allah as it seemed just as much an eyesore and a pain to use xD.
For those who wondering bout Monobook, its a simple vs. somewhat similar to what Original FFXI Wiki looked like. Minus all pics and ads everywhere tho. Just make an account on there, go to preferences, scroll down til you see Site Layout and click Mono Book. And if you click Misc, you can check an option keep you logged in on their site so you don't have re-login everytime you go to the site.