well, I guess for me it would simply be the laws of physics; excuse me for being a scientist.
In order to travel faster then light (FTL) you would have to be in some sort of FTL field (warp field, hyperspace window, or whatever), if any part of your ship was outside of the field, it would be riped off of your ship & left behind, essentially destroying your ship.
I also think that the particle effect clipping through the ship looks kinda stupid. Also, none of the other ships in the game do this, except for very large or oddly shaped ones.