Ideas and suggestions.

I've already shared my thoughts; there's definitely a problem, and it needs to be addressed. Anyone who doesn't see the problem either isn't playing or hasn't played at a high rank. I see the solution as quite simple: the game itself, using the G+U template, should be long and challenging, but the lack of tournament rules ruins everything. The amount of rating points awarded for a victory without the tournament rules checkbox should be reduced by 2-3 times. The same should be done for custom-made templates (arenas, etc.), otherwise, there's a risk that people will start creating them specifically for G+U and reach the top ranks in just 10+ games.
P.S. Another thought: the game could be well-balanced without rules if joining games required payment.