My preference is for MagicWB, too - nobody has made a MagicWB icon set for New/GlowIcons that I've seen (probably due to copyright reasons) - Always seemed a shame as it's certainly capable of being done (I have a HD copy of XJ220 that has a MagicWB style NewIcon for it's drawer). If anyone has such a set I'd love to have a copy! (maybe this is something Martin Huttenloher could do for OS4 and MOS??).
I made a set at my old job for Windows too (that looked 95% the same until you clicked on 'em), but they got lost when I moved jobs and my backup failed (2 years of lunchtime work lost :-(). Again if anyone has a set I'd love to know :-).
As for creativity I think there is a limit at which someone may spend more time creating their interactive computer experience rather than actually using their computer - I used to do this (see previous comment), but don't any more. Of course creating skins etc is creative, and productive if you share them with others.
This doesn't mean a 'bland' screen makes you more productive though (and I think MagicWB is subtle rather than bland BTW).
