I may get a little flack, but I dont think Eclipse is all that bad.
I honestly believe that it is time for a little change, if something stays the same for a very long time, it gets stale, and if you dont like Eclipse, just give it time, and if you really dont like it, there is the option if leaving deviantart.
I myself, will stay, I love browsing this site, and even thought the look will change, it's just the look, the spirit of deviantart hasn't.
Anyways, here's a toast to the old format, you will be missed, but never forgotten!