The question isn't whether it'd be great for people, I agree it would, but rather whether it is at all possible - I honestly think people wouldn't be able to do

The question isn't whether it'd be great for people, I agree it would, but rather whether it is at all possible - I honestly think people wouldn't be able to do it beyond a simple level. It's hard to say that without sounding patronising, but I think it's unfortunately true! However, I think there is a great deal of power available in allowing users to provide some simple level of control, i.e. via DSLs.