What would be the downside if we just kept it simple
XFL is the American Division and CFL is the Canadian Division
Each keep their own rules
Each team plays 4 interlockig games where visiting teams plays by the host rules. American players come to Canada every year and adjust nicely. This is not rocket science.
We celebrate our diversity.
Winners of XFL and CFL play for the Grey Cup. Two weeks is the break between playoffs and GC giving more prep time for adjustments.
I KNOW that I would attend interlocking games for sure. It doesnt have to be perfect. it would be fun and TV would eat it up