You're suggesting that a Business is going to spend the next couple of years working on an entertainment product which will require thousands upon thousands of work-hours to complete, require the purchase of more server systems, a new infrastructure, and continued maintenance once it's functional, then release it to the public for free?
And that business is owned by Activision?
Barring a minor miracle or the CEO's heart growing 3 sizes before Launch day, it ain't gonna happen. The company would be taking a straight loss on all of the effort spent rebuilding the original game, which is -at least- going to be a couple of million dollars. Adding on a "Small Fee" to already active WoW subs will help pay for servers, sure, but the work to create the game would still need to be paid for and that'd eat into profits.
As to the "No Beta Club" signature banner: I'm not currently in the beta so it makes complete sense. The fact that their isn't one -explains- why I'm not in it, but the point remains that I am not, sooooooo.