Swings and roundabouts, so I think it’s hard to say either way whether this is good or bad yet
Yes, redemptions are more costly, but, as a Londoner, it always narked me that Glaswegians paid the same for a redemption to Paris (and that Silvers got the same Avios bonus as Golds), and it’s well nigh impossible to get a redemption to Cape Town or Sydney in premium class, so supply & demand says these should cost more
In any case, Avios earning is either flat or rising significantly in premium cabins, so that should cover any increase in mileage requirements
Best of all, it devalues the Avios that people are getting so liberally from shopping at Tesco and using an Amex card. So BA will truly rewarding people who fly BA in premium classes
Isn’t that the point of a loyalty scheme?