I think GoComm and Kivo have the best chance of this batch. I think GoComm especially is a good idea and in retrospect so obvious, that i wish i would've though of it. Coordinating people, even in small scale events is painful. I remember when i helped with fencing tournaments our club ran (running computer system) it was a constant trouble tracking down free pistes, referees, making sure other stuff (refreshments, garbage and similar) was ok... we solved this with having a dedicated person on the floor in the hall, keeping an eye out and keeping me in the loop, but that isn't very scalable