Hey, thank you so much for playing it and the feedback! And yes, absolutely all of that. I ended up having to rush the UI graphics overhaul because of time limits (I had to stop working on it much earlier than the deadline) so I had to cut a lot of corners.
But yes, the idea is after combat you'll be rewarded with an option of dice faces, and through certain rooms you can get relics (bonus effects like adding a block point per every bonus die added). There was also the idea of having a "smith" room or something where you could combine faces to make stronger versions of themselves! that way if you keep collecting ATK faces, it doesn't just waste space in your inventory.
As for the die mapping, there was planned to be "weight limits" added to the faces. That way you have to make a strategic decision of which faces to add and balance it out. These weight limits would increase per map you finish so by the end the idea was you could have some really powerful dice.
Thanks for the feedback on the UI again, I did realize I never actually identified which side was the player and was side was the enemy. I actually wanted to put in more graphics and have characters in there and such, but oh well. Hoping to continue to develop this further!