Everyone in your house should have their own account, it's free after all. Why would you just use one? I guess it makes sense if you want to cheat developers and share apps, but really at 99 cents each for most apps do you need to do that? People work really hard to make that 99 cents from you and you are effectively stealing from them by allowing someone else to use the same application for free. If you're using one account to share content, you deserve to be inconvenienced and I highly doubt Apple is ever going to change their policies or the functionality of their devices to accommodate you.
Most of my downloads are free. So, it's hardly an issue that I'm focused on cheating developers. It's moreso an issue that I, as a parent, want to monitor and assist my child who's not yet ready to have an account alone. Moreover, what I'm doing is fully allowed in the terms of service. If developers disagree, they have every right to challenge Apple's policy, but that's not a reason why I should stop using a family account. Indeed, Apple encourages family sharing by creating services like Home Sharing. With that in mind, this is the forum for trying to understand how people in my situation will manage through the new iOS. No hostility intended.