What may be useful is something along the lines of the DVD Help compatibility lists. I'd be willing to put one up on my web site just for DVD-A (or someone else can volunteer if they want) since the space I have devoted to Vegas is rather limited and primative that we can't make it interactive like take polls or any fancy stuff my ISP won't allow it.

Just need some simple input:

make/model DVD burner
burn speed (1X, 2.4X, etc.)
media brand used (Sony, HP, Verbatium etc.)
media type (DVD +R, DVD-R DVD+RW etc.)
source (MPEG-2 generated in Vegas, AVI, etc.)
template used (DVD NTSC, DVD PAL, etc.)
DVD player
problems (be brief)