Will there also be a approach to make card system less expensive?
As of rn and after ~ 6 weeks I grinded a lot inside the system (close to 5k dex/str + 15k patk )
I did it with most likely one of the cheapest ways and still this was ~ 150k dias so far.
This is insanely expensive and I would recommend a rethinking of the stone shop.
Tbh card system prices would be fine if the dia shop would not need 100000000 resets and the stone price would not increase after every 3-5 stones (purple/blue)
Also I don't rly get the point of green cost of 1 dia after purchasing 20 since even if you only buy 1 sort you are better with just resting for 17dias with max prestige instead of wasting even 1 dia on buying after the 20 free
This also applies to more or less any other shop but that the cost is increasing already is redicules.
You should reduce the cost of rerolling, especially if you are introduxing a system that makes you able to "mass" reroll cards.
I mean only rerolling alone rn for 2600 cards is insanly expensive and if you imagine the price of the boosts even with 5stars on each card well....
We speak of at least 1-2 million dias.
I understand that this system is not meant to be completed in weeks and is meant to be made in a year proly or longer but having it consum so many dias is just a bad joke.
But even if you would gain 1k dias f2p every day which is utopia you would need over 5 years just to make it if you would spend every single diamond you earn into the system 
Don't get me wrong this is not meant to be offensive in any way, but I readed through all messages in this topic and most feedback I saw wasn't considered or straight up ignored if it was about the insane amount of dias needed for this system.
Greetings,
Miraiyu