Agree - nice to fly but very expensive to look after. Where will you get the canopy repaired/replaced, for example? Expensive to maintain as it has a VP prop, not much use for touring with relatively high fuel consumption, minimal avionics and only 2 seats. So fine if you're rich and want one for personal use, but to operate one for hire would be difficult. There is a limited market for aerobatics and the high operating cost would be a deterrent to a club wanting one for use by their members.
Excellent roll rate, benign handling (but know what you're doing in a spin!!) and terrific visibility. Nice aircraft, but just not very practical to operate at club level unless you've got plenty of folk prepared to pay a lot of dosh!
PS - I mean the ex-RAF ones. The folk operating ex-overseas air force ones seem to be doing OK - and good luck indeed to them!