You are right, prior to SPS it was mostly funded by market fees, but I don't believe it has been for a couple years.
I admit I was wrong to say the season rewards were negligible, I had not done the calculations. Although it is a fair chunk, it is not scalable as the game grows, it's a flat 7.2million per season. This proposal is not the same thing.
As I mentioned in an earlier comment, this will need to be replaced by something and where would this new amount come from?
RE: Update Market Fee to Include 2% to Burn