VPN is a brutal business. But because we are bootstrapped and thus no screaming investors/banks behind our backs and we are a small team, costs are low and there's no one who can pull the plug but ourselves. I don't know how many people are working for PIA, but in my opinion you don't need ten's or hundred's of people to build and run a VPN company. I'm not very surprised they are supposedly in that much debt.
The most requested feature is an Android app. ;-) And unblocking Netflix ofcourse, but they seem to get even better at blocking VPN's than the Great Firewall of China. What would your feature request be? :-)