hay just a quick question why compressing by 5? i would rater have it compressed by 4 because then you could take a main bus line normaly 4 lanes and compress it down to 1

The main reason for it to be 5 instead of 4 is to be divisible by more stack sizes - something that stacks to 50 would either need to have its stacked items stack to 12 (48) or 13 (52). More background here. I haven't tried, but if it works in testing and you have a strong preference, it should be possible to add an option to customize the multiplier to another value like 4.

thx