same if you use play with planets. the produktion rates are calculated by surrface.
The question is how I should add them up.
a) per surface (raw. easy as now)
b) global (its time-consuming to always query all surfaces)
c) Factorissimo makes this even more complex, what do you want to add up? (its time-consuming to collect all related)
all solutions (except a) are at the expense of UPS.
and Factorissimo uses one surface for all levels. i can not separate statistics per factory