Maybe I didn't use the right words, but what I meant is that, since the aim was "delayed" in relation to where you are aiming, you just had to do what I described and the game would become easier. And when I said "if the aim increased the difficulty", it's because aiming is generally something that demands skill.
I think menu controls would be a good addition to the game, but only if a tutorial wouldn't interfere with gameplay, because it's much easier to remember the buttons when you use them while playing.