So, i dont know what the general opinion on this subject is and if this was discussed before. I was always hoping that valve would someday maybe add an option in the advanced menu for tf2 to make it so projectile weapons could be centered like e.g original. We are already able to choose between left and right side and it seems silly to me that this doesnt already exist.
Obv this is not a big issue for many hitscan classes, however for classes like demo and pyro and for some specific weapons this would be a huge quality of life change. The best example in the game for this would be the huntsman. A projectile weapon which was designed for close-mid range headshots. Without centered projectiles most of close range headshots actually hit the shoulder even though the player had the crosshair on the head.
Lesser examples would be how demos and pyros have to track enemy players differently in close range. If you try to pipe a scout that is in your face you have to lead the pipe differently depending on if the scout is moving to the right or left. Overall i just think that this is such a small change that would make the game better and remove some frustration while playing projectile classes.