What if i've moved over to the xorg.conf.d setup? Also I'd not say i was "having to rely" on editing the config, just that there are some things the graphical utility doesn't know about.There are still lots of people having to rely upon manually modifying the xorg.conf to take advantage of their graphics driver's available features.
As for the compositor, I wonder how many of those not using one said that they use the nvidia blob driver? it has known full screen openGL performance issues with a compositing window manager.
I'd like to use the Nouveau driver for my card, but i need it to work with WINE. The x86-compat/* bits in gentoo don't contain a 32 bit version last time i looked. This is important because while it ran well for desktop use, it did not work with 32 bit wine.
Conclusion: On Linux today, you can use whatever graphics setup you want.
In the future might I suggest having users rank options which make sense to do so in their order of importance. I had trouble not checking all the boxes for many questions (thereby rendering my vote useless). You'd probably get much more meaningful results.