Definitely enjoying the latest version so far.
I noticed that diamond storm isn't as powerful as the class abilities. Which I can understand why it just feels underwhelming. Especially since it's Renamon's signature move.
I think I have an idea on how to rebalance diamond storm.
The trick will be to have it synergize with the new class system.
For example the rod could make it single target but still multihit.
Whilst the book can make it hit all enemies once each.
Or getting a small defense buff from using it with the shield.
Or a 1 turn stun with the sword.
Or hit once really hard with low accuracy with the axe.
Maybe a bleed proc with the sharp claws at max rank with the class.
I don't mind if you chose not to change it further.
I just thought I'd throw in a few ideas and see if anything sticks out for you.
Still a great game and hoping to see it continue to grow.