Short answer - YES!
We've certainly considered it.
But when? With the WB taking up winter / spring, and the DCI going summer / fall, when on Earth could we fit in a Class Champ?
Being a chessplayer myself, our rating system is based on the the same proven system as chess, modified for the variable number of players in a game, varying result options, and so on.
Also getting the help would be a challenge, as well as fitting in potentially two rounds of a tournament. At full length, a 2-round non-blitz tournament could easily go 1-2 years - one of the drawbacks to things like the WorldMasters.
Happy to discuss any ideas you have, or um... any offers to run a tournament.