The life time cycle of a graphic novel being published must not go over 4 years.

I don't want adolescents to reach adulthood while they're reading your comic. I don't want to be telling my kids why they should read your ongoing webcomic. 216 pages is what you get with one page per week, let alone with a faster rate of updates or even erratic extra updates.
Of course, this limitation will always be up to discussion. It is a simple demonstration of our dedication to stories who begin, develop and then end.