A minor pet peeve of mine is that the hero descriptions don't tell you much besides how to charge your power faster. Heck CatBat had a different description that they can heal allies.
I feel each character should have a description of what they do in battle (N. Brio's description is being used as an example with the image). For example make N. Brio's description mention about his slimes and Brute form, Elora being able to support her allies, to Tawna and Cortex being good damage dealers.
More detailed descriptions can give the player a good idea of how a character ""should"" be played.