I would have been all for this, but with the card level rewards proposal passing, I think I have to go against it. You're essentially saying "We're going to force you to level up your cards." Then you turn around and say "We're going to raise prices." The two add up to alienating real players.
Now I know this game is trying to cater to bot-running investors right now, but eventually you're going to want humans to play the game, and in order for that to be successful, you'll have to be able to keep them around. If you keep making it harder for normies to earn and purchase they will leave and quickly.