I was talking about things similar to this earlier. If we all got together and helped eachother level up, we would have a much better game than if we constantly complain about characters being the way they are. Just as Sub moved from low to mid, Kenshi moved from unknown to top tier with the sheer effort of the Kenshi community grinding out playstyles, strategies, and methods. Even Kabal wouldn't be where he is now if it hadn't been for REO, Michaelangelo, and Erik Warda coming up with new tech. Think about it, at some point, every character was undiscovered, considering how drastically different the game is from Armageddon (can't just hop across games and be like "Oh yeah, this is how that character works" like you could in SF.)
If you really want to win with your favorite character, then you might have to put a lot more time in if they have fewer tools. It's just the way of things from here on in. As Billstickers wisely put it, no more patches are coming. It's now up to the players to change the meta of the game, not the game designers. And it's very possible. Changes happen all the time with this game. That's why I like it so much; the matchups are frequently evolving as new tech comes out. As for me, I'm going to try to push Rain a little farther, but since I also happen to enjoy Kabal and Jax, so I'll be repping more than just mid tier at NEC XIII. Best of luck to anyone else who happens to be going.