Which parts of KDE4 desktop do you dislike compared to KDE3? Since I'm a happy case of a user that migrated from KDE3 to KDE4, I'm genuinely interested in what the unhappy think on this.
I already suggested in a previous post that, from a user perspective, lots of things in KDE4 are a direct continuation from KDE3. The most visible differences between KDE3 and KDE4 are actually Plasma and its KWin integration. Also the KDEPIM applications have got a rewrite too, but otherwise lots of things are very similar.