I wasn't going to reply to this so I didn't offend, but I will.
Keep the Wiki simple. It's not a forum, it's not something that needs to look uber awesome while you're surfing the web.
It's a quick reference tool when raiding for me, and something I want to be able to navigate easily.
IMHO, if you can keep the default thing, then add skins in if people choose to install them, that would be the best option. If not, honestly, mid raid, someone asks me a question, then I went, screw it, look it up yourself.
Yes, I like the new look, if I was on the Wiki a lot. Make it an option (if possible), not mandatory?