Amazing.
Personally, if I were to meet a TF2 player IRL, I would sneakly try and 'accidentally' hold their hand so that all the muscle memory files and muscles were downloaded into my own body's database, which would allow me to fuse my own aim style with theirs. You could do this with as many players as you possibly can and sooner or later cultivate the perfect aim.
Apparently this is wat Flippy did at i55 which is why people said he had bad aim on Scout but then miraculously after was just picked up by Epsi. Similar cases is Banny absorbing Plat to achieve the Rinnegan, etc etc