However, simply scaling the models is much easier and should be able to be done quickly. The only thing I can think of that re scaling would cause issues with it the cockpit size. However, looking out from FP view, it's all relative.
While the image doesn't describe a perfect solution, if PGI were to do this 99% of scaling issues would be solved. While mech size within a weight class could vary some degree, more than 5 or 10% starts to create balance issues. While there are obvious outliers, high adjustments need to be made to most of the medium mech's scale.
Yes, while the Nova is clearly the most out of scale mech... the centurion is not far behind.
Also, this doesn't take into consideration that clan mechs might be smaller per ton, based on their compact and advanced technology.

















