Your analysis is incredibly thorough, as always. Bravo!
Thanks for showing me that I already am getting some DEC from the few cards I rented :)
As for the SPS and Vouchers. Currently, I am keeping SPS to get enough for a 100 Chaos Legion pack. I'll buy Vouchers needed on the market since I am receiving just 0.7 daily. I'll get additional SPS from the $CAKE pool which gives interest in SPS :)
!BEER