Ellis,
While I am not connected with your WGT Belt, and know that my opinion probably counts for less than those who are, I would add a few pennies if I may...
Your tournament belongs here. I have long been a member of the Ladder site (as a matter of fact, I was one of the first dozen or so to enroll) and have nothing but the highest regard for Mark and what he started.
The problem with moving it, as I see it, really has very little to do with the site mechanics and procedures, but more to do with the culture that has surrounded what it has become. There are too many tournaments, clubs, cliques, administrators, groups, etc. around those ladders to ensure that your efforts remain your own.
This is not an attack on any one specific person -- (you know who you are, and this isn't about you. No response necessary.)
Your tournament, in it's current form, Ellis, seems to work just fine. The only thing you will get if you move it to the ladders site is less control, in my opinion.
For those who missed it.. there is nothing wrong with the ladder site, their groups and tournaments, the administration, et al. It is a great place with great people and serves it's function admirably. I have spent HOURS and HOURS on that site over the last year and would and still recommend the ladders to any and all who wish to play without quitters. (Original link still on my blog!)
Again, just my 2¢... put them in the tip jar if you wish.
Peace.