So you probably figured out this has to do with the original unit frames from blizzard.
I haven't found any mods like the one I'm about to describe, if there is, please tell me.
Original unit frames, but with an adjustable size and movable frames.
plus with the fade effect that x pearl has.
Also, it shows party buffs below individual frames and debuffs above.
Target frame, buffs on the right side, debuffs under the frame.
that's basicaly it. smaller things can be added like
Change the bar colors/styles such as in x pearl, maybe add 3d portriats, ability to change the border colors.
the main thing I'm emphasizing on is the ability to move and resize the default unit frames.
this wouldn't be a problem if blizzard would make individual ui frames