We (yes we, as in you and I) can agree that odyssey just kinda sucks as a game mode. That’s why I propose to change it. Before we get started, I would like to note that this is sorta unbalanced and this is purely based on what I see as fun. You may not like it, but I will.
Alright with that out of the way, let’s start with what other games do well because we love copying. I’m mainly going to be talking about Mirror Dungeon from Limbus Company and IS from Arknights. I propose to make Odyssey a faster paced game mode, re-add the skip wave button to the base mode and move to shop so you can only access it every few acts with a “boss stage” right after it (Idk maybe put like a high health boss there) Also, instead of buying buffs with yen, use another different currency that you get from beating the act. You can also add harder stages that yield more currency so you can buy more buffs. Also, make it no traits (I know, controversial take, but it’s far easier to balance for both new players and veterans when monarch isn’t involved 🤡)
TLDR: basically turn odyssey into IS from Arknights or Mirror Dungeon from Limbus Company
Again, this is purely what I like, and this is a very selfish take that is very hard to put into practice. Just humor me on this one, K?