These are small things that can be overlooked. Some maybe useful, some maybe aren't but may still hold some kind of value. I will update this depending on the things I find or that isn't listed elsewhere.

1. You can save stamina till 1000. There's an internal cap of 1000 stamina. So, you can horde stamina for events! Sometimes you may have to spend some of that on a level up though as it may trigger that you'll lose stamina message otherwise.

2. You can change who goes on dungeons with you! Nothing beneficial, but a nice cosmetic for yall lovers of your favorite characters. Just use the slot all the way to the left.