Another way to look at the issue of being "thin"; and this relates to the issue of cross-over as John had mentioned, and his reference to the M22:

A lot of folks prefer a more full-range speaker than the VP100, and that's where an M22 comes in! It goes quite a bit lower than the VP100 and that in itself may aleviate some of the "thinness"

And of course if the center is properly crossed to the sub, the center will just happen to "sound" more "full" as well!!