Well, I'm not sure what you're trying to do with that many common events, but I have a feeling that what you really want to do is create complex systems. Anything that could possibly require that many common events to work will probably be better handled if you either script what you want, or have somebody do it for you.
By the way, this question is more suited for RMXP/RMVX General Support than RGSS/RGSS2 support. You're not dealing with a scripting problem, but rather, an inherent limitation of the two programs. Reporting for move.