Don't think it's a super hot take that -1 discard is a fairly huge jump in difficulty, and IMO the restriction itself is kind of less fun compared to the other more engaging joker modifiers. I know it's left over from an earlier version where the higher stakes have different modifiers in which the -1 discard seems tame in comparison, and by just reshuffling the stake modifiers I think the difficulty progression would be more approachable and enjoyable for players to experiment with the new joker modifiers before moving onto gold stake with -1 discard which won't affect completionst+ or gold stake in general. So the stakes will look like this:
Blue Stake: Perishable Jokers
Purple Stake: Blind scale faster for each ante
Orange Stake: Rental Jokers
Gold Stake: -1 discard