Couple things.
Turnout at RN5 was low, we went from 125-150 attendees to maybe 20. That being said, it was a lot more fun. The people that came, came for the comradery and not for prizes and free food. It was a little eye opening. When Mike and I took the reins from Hawz we dreamed big!! RN3 and RN4 were huge and for a short while we thought it would be the way to go.
Last year for RN5, the response from vendors was almost non existent. As the main point of contact for donations the biggest complaint I heard was lack of response from RN3 and RN4 and I think that turned vendors off for RN5. There were more issues with RN5 than just vendors though. It takes a team of 5 or 6 to make the event come together like it did for RN3 and RN4 and personal lives, work schedules, and prior commitments, easily get in the way.
Will, RN6 happen? Most likely yes. Where will it happen? I hope Shawano, but I'm not the one to answer that, as I'm not involved with the range directly.
Will there be 3 tables full of shit to give away?? Nope!! Personally, I think keeping it limited to Wisconsin industry only makes it more meaningful. Keeping prize counts low means the people that do show are there to hang out with friends which makes the shoot more fun.
I guess at this point there's no real answer to give, other than to say, keep and ear to the ground, if it happens you'll hear rumors.