Even with the coil 1-5 nerf I don't think casuals that queue up with 8 random people will be beating Twintania very easily unless the nerf is so huge it changes her completely. There are a lot of instant kill mechanics, twisters, dreadnaughts, getting hit by divebombs and knocked into the wall. Organized groups who aren't quite there yet on beating her in 2.1 will stand a better chance.