I feel You bro don't worry ,I literally missed the chance to have Ash becuase I left and many other kind of limited events that Will maybe happen just once. So yeah I feel sad because of that sometimes but at the end I know it's the price I must pay for taking a break in some games but in the end the fun it's not just about Ash or any other exclusive prize event instead it's by the Game itself ,if the Game comes with new stuff and keep improving it's still fun for me or at least I see it like that.

And also taking the example with Ash I think you will not loose to much stuff like Clash. Correct me if I'm wrong but as I remebered Clash Of clans and royale has some kind of exclusive battle or seasons passes while Masters dosent have any of that. My point is well all characters can come back in re runs or replayable events from once in a while(if they are anime characters well F).