When using MR points don’t you see the price of the airfare first and then redeem the MR points for the ticket?
If so, presumably you earn the usual Avios based on £ spend and tier multiplier, along with TPs based on cabin class as normal?
Is it still the case that all WT+ / CW / F tickets earn full TPs even if booked in the lowest booking classes for each of these three cabins?