I definitely agree with the tanking mission.
That's why you have to admire those that are really good with the tank.
I don't know if anyone else has the problem, but on my ipad the controls aren't smooth. So if I shoot and the go to move the aim just a little, that won't work, as it takes a big jump and then I have to try and figure out where I was before and hope to then move it a little to narrow down my aim.