Originally Posted by
Ultimatecalibur
And if you are actively seeking out that mount just think of it as collecting 99 parts of the whistle. Yes, they can take a long time, and yes, they can take up space in your inventory, but "taking a while" is no reason for them to be currencies.
And you only need 1 Mirror or 5 Diamond Dusts per item. Making those a currency would just needlessly bloat the currency menu. You could have easily tossed the Mirror and just gotten another after you finally gotten the globe. you were the one who clogged your inventory with an unused upgrade token.
They are more stamp cards that you trade in. Them being items that you can toss when is much better in the long run than adding new trial currencies every patch.