When you introduce something new, there's always ppl who like it, and not like it. I would say the ratio is usually about 5-5 or 4-6 one way or the other, unless you make something super good or super bad compare to the old one (which rarely happen)
So, says IF you switch back to the old one, there will also be alot or "other half" will raise their voice and say they don't like it, asking to use the "new" one, what would you do?
The admin, or whoever in charge have to decide, and the admins here did make the decision to make the changes THIS YEAR, so why don't ppl live with it, and make it/suggest it the way you like.
For example, someone don't like the nav bar, make contributive suggestion on how the nav bar can be improved. it's be more effective than yelling all day long
I personally like the new style, except that I miss some of the quick links for All my installed hacks, new hacks ...