Idea an drops are good, the digital comics are a nice thing too, but overall you need to be lucky enough to get the drops at the retail price against all the bots on the app that they can't stop, so you should expect buying things at x2 to x10 of their value on the market and you cannot convert your gems back to USD so practically even if you sell you won't the money yet just gems. I think the developers should focus more on those type of things knowing the hype they have.