I like this much better, even if we have to burn 2x bcx of a card in order to unlock 1x bcx of a soulbound, this measure sounds even more deflationary and fair than 10x dec burn to unlock, which most people can't afford to pay even if they wanted to.
Overpricing has been a huge problem for this company ever since CL, seems like prices are thought to be paid only by a very exclusive elite, most of which I doubt they are still here.