Okay, so i finished the playthrough and first off, the story was just a 10/10 for me, the story made me feel horrible for making the bad choice, the gameplay was something i had never seen before, and the puzzle/combat mehanics were great.
If i were to add one thing, it would be a cooldown to the lightning spell, (or just the spells in general), since (and spoilers here), in the final fight after absorbing the urja, you could spam the tablet fast enough and the enemies couldnt even attack you, adding a 1-2 second timer could make it more intense and enjoyable (in my opinion ateast).