I know GrimUI, FreshUI, and another (I can't remember the name) are still using the layout from DuF with KGPanels to recreate the look.
I myself am in the process of using LitePanels and STUF to recreate the look, but with less system resources and more efficient code. However, I won't be releasing/uploading a ui pack for it, but would be happy to do a show and tell thread on how to do it (I don't want the hassle of authors getting PO'd because of download count, among the other politics that I agree with them on). I would be willing to attach my WTF folder though, under the guidelines of this site.
My progress so far (I'm in no real hurry, I too just miss the "feel" of MazzleUI).
http://www.wowinterface.com/forums/s...postcount=1321
Also note, the textures and 3D models that were used in MazzleUI were property of Mazzlefizz, and aren't legally available for use without express permission from Mazzlefizz. Otravi texture excluded (health bars, I think). The two ui's above are using zmob 3D models, but I'm personally going to stick with the models in STUF.