I could be wrong, but I vaguely remember testing the whole "which day to pay rent" thing I while ago an i thought the counter started from when the rent was due, so equally 14 days every time. I will test it again tho! [img]/uk/images/graemlins/smile.gif[/img]
As for calculating the rent on the base size/plot size, I doubt it'd work. People would either just avoid upgrading the plots. Or alternatively, sell most of the base before the rent was calculated, then buy it all again the next day! A a fair amount of hassle, but for the amount you could save... [img]/uk/images/graemlins/grin.gif[/img]
If there is some reason for keeping rent that no one has discovered yet, then the only way I can see do it fairly without cripling the smaller, or killing the larger SGs is to work out a percentage on the amount of prestige earnt in a fortnight.
Rent = (total prestige on day 14) - (total rent at day 0) * 9%
Would be interested to see exactly how they calculate rent atm tho [img]/uk/images/graemlins/smile.gif[/img]