Indeed. I think most pro's who would need a computer like this would want to get the 512GB option on the laptop just to secure themselves over the next few year

Indeed. I think most pro's who would need a computer like this would want to get the 512GB option on the laptop just to secure themselves over the next few years, specifically because one can't upgrade the internal hard drive themselves like the old MacBook Pro. Though it's possible Apple figured that if they offered such option on the 'lower' model, most people wouldn't bother with the highest end because the processor bump is marginal.