B. Last few vip levels there has been no mention of rakeback increase like I received for Silver and gold.
Are we still getting increases? A chart or something would help.
I don't think rakeback ever goes up besides at Bronze when it goes from 0% to 10%. Most of the VIP levels after that just give you a one time bonus, as well as a slight increase to the base amount of weekly bonuses and monthly bonuses.
Stake VIP-club page says that the rakeback is 10% of house edge. Maybe I was getting 10% of the house edge as rakeback when I was bronze VIP level (can't recall properly). I'm Platinum VIP rank now and I'm getting 12% of the HE as rakeback. The rakeback rate was also 12% while I was a gold rank VIP.
AFAIK, there were no level-up bonuses for old users so they kept increasing Rakeback instead of a one-time bonus. After the new VIP system, they didn't change old Rakeback percentages for old accounts, IIRC.