I thought the design seemed reasonable at the time, the strict separation of concerns that the mixin classes provide is valid enough. It's only now that we've

I thought the design seemed reasonable at the time, the strict separation of concerns that the mixin classes provide is valid enough. It's only now that we've been using CBVs for a while that it's become more apparent that they're somewhat over-designed, and can be awkward to get to grips with.