I played 1.09, although Magic system is established, feel like Elemental just missing some fun and great / uniqueness - the kind of "uhmmm" feeling

1) Magic books

a) Life and death is both white colored symbol? can we consider Death as black or at least grey color to differentiate?

- Each Magic book is not powerful and only have 1 pick, 3 points - yes or no, there is Advance / moderate / basic set of Magic books?

c) Each Magic books independence / uniqueness is not  emphasized, something like max 3 type of magic books for any custom sovereign could really make him more interesting.

d) Something like you cannot pickup both life and death magic books - exception to some special story driven characters, this make sense - you cant be good and bad at the same time and add more uniqueness

e) Label each magic with frame color or theme, (example - all the earth spell with green frame - easy look and great feeling.

f) To many numbers in the UI screen just like playing with numbers, probably we can consider Icons, big potion for 10 mana, small potion 1 mana if a spell need 12 mana, we can put 1 big potion and  2 small potion Icon there. align / arrange the icon neatly so that It can be digested by the brain within a few second after looking at it

Above is the my 2 cents, and sincerely hope it will helps. Elemental could be more addicting if it can restore the much needed unique feel IMHO.