>>19415124Battle Spot Doubles and VGC.
Because Doubles is just beautiful. Many more options per turn compared to Singles, Protect, spread moves interactions, speed comparisons, Quick and Wide Guard, and few turns so that every decision matters.
Because of the skill inherent in Doubles play, the top Doubles mons aren't as far off lower-tier mons as in Singles. Mega Kanga is entirely beatable in Doubles even with VGC restrictions.
All that plus actual face-to-face tournaments. It's glorious.