If that's the sum of it then I'm disappointed. The concensus of our online chats with Russ have been pretty unanimous - make it easier for top level elites to fly WBC.
Russ' answer is always - that's why Plat's get 125% bonus - to make it easier to buy Rulebusters.
Problem is there is no rulebuster that allows upgrading discount fares. And worse WBC rulebuster comes out of the C bucket which has dismal availability at best.
NW you can do better!