I have some suggestions of tournaments that we can do, that just came out of my head:
1) Dimension Tournament - Synchro dimension, Xyz dimension, Fusion dimension, Ritual dimension, Pendulum dimension.
2) Element Tournament - Fire, Water, Wind, Light, Earth, Dark.
3) Number Hunter - so like everyone that participates gets an number card, each time they win a match against another number, that person gains that number.
4) The Next King of Games - like an original tournament, who ever wins is crowned the King of Games, this one should happen every year.
5) Yu-Gi-Oh! League - the Yu-Gi-Oh version of the Pokemon, if you're a member of RRA, they did this once.
6) Season Tournament - like when it's Halloween or Christmas, a tournament would happen.
So these are the only tournaments I thought of, so I'll let you guys see if these are good ideas. Or if you got better ideas, please post down below.
"Yang Zing will rule the world"