I have an import 1.8T GTI 2001 model year - never caused me any bother. The reason the original guy imported it was that it was cheaper than getting it from here.....besides....like Chris 'N' Jen said: technically all VWs are imports.
The car you describe is much like mine, far more extras than I could find on any other car (got no Sat Nav though

).
Also, you get the first aid kit and fire extinguiser as its from Europe!
I wouldnt worry about the warranty, as its out of that period anyway. So as long as you get everything you do on a UK car + more, what have you got to lose?