Hi! This is intended, not a bug, this was a game design decision

Thanks for the answer I wasn't aware this was a choice!

Hi! I hope I'm not bothering
Do you think you could help me understand the reason behind this decision?
Because I fail to understand why it would make sense to have the XP gain be... Somehow capped, for coins? Is it also the case for other things of the sort?
To me it would be the logical choice to keep it on getting higher and higher. Even only for making players want to merge higher and higher. To make it worth the space taken.
But I'm no developer, and, there could be some logical explanation that I would not have in mind because that's absolutely not a field I'm experienced in, that's why I would love to understand that

Our game designer initially wanted to avoid having the new tiers affect overall game progression balance, though this is something that may change as part of ongoing balancing