Why not have MNal cricket and American (gridiron) football?

I think I remember a couple of international cricket games being played, and Kavalos possibly used to have its own little league. I'm not sure anywhere's done American football before.

Having sports in the FMS is usually down to two things; the amount of interest within the community, and how available and easy simulating games is. Football has a (relatively) big following and there are enough games, so it's easy to do a lot of it, but other sports either aren't as popular and/or games are few and far between.

That being said, there is absolutely nothing stopping anyone from starting a new sport sector or restarting a dormant one, if they're able to do it well enough