Ymir concept video looked really good but looking at 2-3 years before that is released also like 90% sure it won't be on mobiles since its using unreal 6 which may be a tad too much to play properly on a mobile. The biggest offputting thing is its going to be ran by Wemade which with how they have managed Mir4 is a big enough reason for me to pass on playing it.
I think the next biggest MMORPG that I will play will be Ashes Of Creation as the creator has stated multiple times the shop and paid currency won't buy you a significant advantage over the other players that 80% of the shop will concist of cosmetic items and Quality of Life e.g storage expansions, small perks.
I am fine with light to casual spending but the levels at which people have spent in Mir4 and absolutely insane a game is supposed to be fun when you design it with to be No.1 you just have to throw money at the game it makes it less fun for a vast majority of the long term casual spenders as there put in the situation of never being able to play the game as freely as they wanted because the players with the highest bank accounts win and hoard all the free players methods of progress to keep there own characters progress and stop the others from doing the same.
That was what happened on EU11 with Blacksun, Ancient, and Insanity the 3 biggest spender clans of the game formed an alliance and hunted everyone off the server and hoarded everything, soon as wayfarers came out every single clan that was left playing the game at that point moved server to get away from them which is ignoring the fact of how many people probably quit due to the actions they took against everyone else and was only possible due to controlling and hoarding all the resources after investing heavily into the cash shop to get significant leads talking thousands to tens of thousands.
Ymir will be the same Wemade don't care about the enjoyment of there players only how much money they can make so Ymir will follow the same methods they used in Mir4 if not worse which is why I won't play it.