Experience dictates people lose interest after playing for a while on the same event. This would mean some of these events would have no attention, because people had already played for 2 hours and were tired.
It's even worst if you consider them happening at the same time.
Something like that may be too hard to organize properly. Static stuff like teaching and market are possible to be around, but time events such as contests and tournaments shouldn't compete between themselves, else they'll all end up short on people (since we don't have many.) Summer's also a tough time, at least speaking for DE, which is usually more inactive during those times.
Still, I'm interested in this enthusiasm of yours.