Personally, I think a GUI install should come with full fledged desktop GUI (either KDE, Gnome or XFCE another) instead of a window manager as they are on their own quite useless. I think fvwm is probably worst choice even as a window manager only as any modification requires user to learn the bit cryptic fvwmrc language.
A full fledged desktop like KDE4 would also allow us to nail out bugs related to desktop usage and building from pkgsrc quicker as more people would be reporting. Just saying... Petr
