I'll be interested in helping with organizing something. I was the youngest flyertalker at our gathering in Paris last week which I organized.
I agree, we don't want to put any limitation in place to prevent people attending. Perhaps some of the older flyertalkers even want to hang out and to feel young again.

And they are very much welcome to attend.
Just throwing some ideas out since OP is located in the US. Why don't we do a US DO as a starting point? Perhaps LAS? Lots of clubs and bars for sure and I am sure it appeals to the younger flyertalk demographic.
OP, please let me know if you are still interested and PM me so we can discuss further and perhaps we can throw something together.