There are currently 568 different weapon skins in the game and the game rolls 4 skins every 24 hours

Assuming that no skin is repeated, for us to get that one skin, it will still take 568/4 rolls i.e 142 rolls or days (rolls = days because 24hrs)

Atleast we could see an increase the slots and/or add a wishlist system which increases probably of certain skins.

It's as if we can't spend our money even when we want to