All supporters here are paying customers
Supporters... As in, one who supports the game. The whole idea behind being a supporter is to help pay for the game and to keep it running. You don't buy a beer at some store because you're supporting a beer company. That would imply you're giving money to them in order for them to succeed, but in reality you're just doing it because you want a beer. Moral of the story... if you're paying for supporter for any other reason than to try and help the game grow you need to reconsider what you're doing.
The BBs are doing the best they can.
I disagree, I know a lot of teams that buy supporter for the features that are given. I'm not saying these people do not want to support the game, they do, but that isn't the main reason they buy supporter.
To make my point clearer, if there were no additional feature for being a supporter then BB would receive a very small amount of money from people buying supporters. The primary reason most people buy supporter is the additional features.