Sales assume same discount for all included games, but this may not be true

[Draknek]

Sale 1: https://itch.io/s/7108/draknek-co-puzzle-collection contains games A/B/C at 15% off
Sale 2: https://itch.io/s/7109/sokobond-a-good-snowman-summer-sale contains games A/B at 70% off

A & B are in both sales, and if you go to their game page <e.g. https://draknek.itch.io/a-good-snowman> you'll see it chooses the greatest discount to apply (as expected).

But on sale 1's page, it shows those games as being 15% off when actually they're 70% off because of the overlapping sale.

Ideally I'd like to be able to just have one sale, and choose per-game discounts. But since right now everything in a sale must have the same discount, I'm forced to have multiple overlapping sales.