Interesting idea. Everybody kept saying how they want to swap cards 1:1, to which I said old cards might trade 1:1 with equally old ones, but go down (as low as 5:1) for recent promos.
But coins? Let’s see - i got 2.7k Hengyens and 3.9k Guos besides two 6* of each and was always torn whom to spend the (older) choiceboxes on [preferred Hengyen, but was closer to Guo]. Got some 900 each of Laopo and Daiyu that I’d like to complete at some point too but having one 6* of each, that would be a loooong wait…
Now if there’s a trade in, I might be tempted to blow all of those cards and I bet that would be the case with most impatient folks. Might even ruin their game, actually - after they get zero value (in the TWD casino) for their exchange and regret to not have completed their S-classes eventually…
So, I’d say that trade ins for a specific card should depend on whether you completed the respective S-class collections:
- 0/2 S-class claimed from museum collection (also applying to those who were lucky to pull a direct S-class) = 5:1 trade in
- for 1/2 S-class collection claimed = 2:1 trade in
- for 2/2 S-class collections claimed = 1:1 trade in