Oh, interesting... I've only done a little bit on Sorare (and never for real money) - the dynamics of the pricing is always interesting.

I've had a similar thought before about the Draft style and how to transfer players between teams - your team does well, you win money - which you can then choose to reinvest in your team or withdraw. Each time a player gets transferred, his price increase by x.

I don't know if you've ever played La Liga Fantasy (?) but that has a similar concept. A player has a value and if somebody "bids" at that value (which can't be less than you paid) then the player is transferred. You can increase the value of a player by €2m at a cost of €1m. You could always sell a player back to the pool for a random percentage of their value - sometimes more, often less. You have a maximum squad size and can only pick 11 players each week (no subs - non players score 0). I really enjoyed that version but it only works if everybody in the league is completely committed which in our FPL league, there are certainly enough who aren't.