i'm totally agreed with your idea .
i'm very happy that i'm not the only one in this road , until this moment , i prefer stay in v2 than moving to v3 .
in fact , v3 is so modular and very customizable in so many aspect , but what is related to the core files , i can't touch it until the staff do it .
in my simple idea , what is better to do next , more modules or add more feature to the core ?
the webhosting market is the big market for billing software , and us as we have a lot of years in this market we can see what is the needed and better to add as feature , i don't see any benifict from coding more plugins than ignoring some great feature to the core system (domain manager , powerfull hosting managerment -cpanel/plesk/directadmin- , server management -softlayer/ovh/hetzner/leaweweb/ect .... - , coupons , powerfull shopping cart system , ...) .