"The 2014 final BlizzCon in Mists of Pandaria was without a doubt the most comp-diverse BlizzCon to date."
If I remember right, every single team from the 2014 tournament was Lock/Shaman or Mage/Druid with the exception of Kording's WW/Spriest (only because their Lock couldn't come). If you weren't one of these or a class that synergized with them, you're shit out of luck. Maybe next Blizzcon you'll be viable. The 2015 Tournament was a lot more diverse (arcane mage, melee cleaves, wizard cleaves, caster/melee etc.). it felt more entertaining to watch at times because every game didn't involve LSD.
I don't want to derail because it's really besides the point but that's simply not true. In 2015 we had 3 RMD/godcomp, 3 FLS/Jungle, 1 Turbo and 1 WLS. In 2014 there was LSD2, MLS, WMD, 2 Godcomp (1fire 1 frost), LSM, HLS and spriest/WW. 2015 was literally the first time ever a single comp appeared 3 times in one blizzcon. To say in 2014 "every game involved LSD" makes no sense at all when there was a single LSD2.
Edit: Forgot to mention I really like the 2 comp limit idea
I think that is a perfect description of what I'm talking about. Some of it has to do with game design, but far more because of the ruleset imo.