Fury is right, what Hades did is going too far from retail. While I do agree that the resized SGreen looks better, I very strongly disagree with shranking the others beams. Resizing the haze to something more correct is one thing, resizing the beam itself to something much thinner than retail is a totally different matter.
Aside from the obvious "big beams are better because they're more impressive", the sheer size of Terran beams have always been a very core part of the "primitive beam technology" feel of Terran beams, as if lots of energy got wasted for a poor effectiveness.
I sure hope those modifications won't end up in the MVPs, or at least not without the required corrections. But modifying the current MVPs beams to something closer than retail could be done IMHO.