Mmm.
I know where you're coming from, green, but what would you define as worthwhile, and what do you define as 'tons'?
I know this is only one part of the issue, but a difficulty with the current system as I see it, is that you need to do postgraduate work to be an academic. Postgraduates train you up for all sorts of other things too, obviously, but one of their main functions is that, especially if you're looking at something very non-vocational (which covers plenty of Arts MA subjects).
Currently, it's really hard to get to be an academic if you're not from a wealthy or reasonably wealthy background, which means that the people who're teaching and researching come to represent quite a narrow social group. I think this is a real problem. But I wonder if those are people you'd see as paying enough tax to make it worthwhile?