Mark,
You da Man for your forward thinking on trying new ideas to help the legends earn a living and bringing them close to a select few. I think your idea of the Mag 7 can work, but probably not marketed to the pool players in this forum. I believe you could get what you're asking if you targeted maybe the
entertainment field and other groups that have mucho money and like to rub elbows w/royalty. Maybe Joe Rogan and others could help w/intros.
Here's a suggestion: what if you made a nice dvd of the Mag 7 telling their stories and interacting w/each other - you know, show their personalities. You could sell them to the masses, and use them for promotional pieces to package a nice presentation to affluent groups looking for unique entertainment: Heck, I would buy one just to listen to those guys and be able to keep it.
The dvd would do a couple things: it would generate some cash from its sales so participants can get a little money sooner, but used for the bigger picture to help sell your idea to let people who may not know these guys as well as we do, get a glimpse of what a great time they will have if a group of 20 would pay for them to get a close up and personal "semi-private" weekend. If you are able to sell the idea once, you get some quotes from the attendees about how great it was and you are off and running.
If the Mag 7 need to play a little and practice for a day to get an idea of what to talk about, they can come to my basement in CO

. I will only charge them $100 each

.
Keep up the good work, I hope you find what you're looking for, the legends of this game deserve to make a little money for their life long of great play.
Dave