Cross would be really exciting, but there would only be one race per gender right? That's maybe just one day of racing and many of these sports are multi-day, and multi-distance events. I'm not complaining, but just one day of racing won't be enough to satisfy my cross fix. How about a skills competition...."10.0 for dismount"...? Cross dancing? Cross bike in the half pipe?
Joking aside, I am really glad people are taking the initiative to present cross to the IOC. Very cool.