We should invent some new sport, it's gay we're stuck with the stuff they made in the 1900s and never updated. Last thing we got was paintball, and quidditch.
How about a gun-focused sport, where a team of 3 defenders takes turns taking on 3 teams of 3 intruders armed with non-gun euro-legal implements, call it something like "euros vs yanks" and give the armed ones 2+1 mags and a Glock 17 simunition each, let the hammer team play the "euros" and give them crowbars, butter knives, whatever's legal over there.
THis is a rough start but come on why isn't there anything fun and new with all this technology we have now?