I sure didn't. It's just that I played a BW romhack recently that happened to feature doubles more prominently and I realized how flexible the format is for main campaign difficulty compared to singles. With singles you can come up with creative strategies underleveled but the fact remains that level is often a crucial factor in winning a battle. With double battles it comes down to focusing on the bigger threats that screw up your team and slowly taking down the opponent's teamwork. Since that also applies to you as well, this situation makes for some interesting and dynamic misdirection games rather than seeing who has the bigger dick when attacking.
There's probably a more difference nuance to it in actual competitive, but for single player it's also really good. In that romhack I was talking about, postgame bosses were outlevelling my party by 20 levels and yet I could still pull off a good strategy that didn't feel like cheesing the game (like FEAR or Moody). Doubles has the potential to fix the difficulty problem that Pokemon struggles to balance in the main story, in my opinion