If you dislike new Origin client and liked old one more, you can easily get it "back".
Close Origin (as of Exit), then go into Origin's installation folder using some file manager or other, select Origin.exe, right mouseclick Properties and apply Windows Vista SP2 compatibility mode on it. Then, after starting Origin again, it announces that it has an update. Let it update itself, close it and restart it.
Voila, now you got the old client back. Besides little nagging (one time happenstance) about old operating system, it works fine.
Stumbled upon it accidentally and thought I'd share.