If we can get rid of the crap
i.e. all the stuff made for the CDE group who allegedly don't watch it, it might be worth a subscription to keep BBC2, BBC4 and Radio 4 (with a little Radio 2 for seasoning).
But the presence of a conditional access system is fine if you already have one (e.g. cable or satellite) but not if half the population or more have to get the hardware - and of course the cost of a CA is a net drain as well.
A hypothecated tax - which is effectively what we have now - is surely the simplest method.
I wonder what happens to my pension if the BBC runs out of money?