I know FE would be probably nearing the phase when it will be feature-complete (end of alpha?), but I have one wish - I would like to see some more unpredictability in magic, especially in case of powerful spells.

Sometimes, a summoned being could turn against the summoner. Sometimes, a spell calling lightning strikes on the enemy could manifest as a powerful storm that destroys crops in an area, causing famines. Fireball could lure in fire elementals who would attack everything in sight. Strengthening spell would mutate the friendly troops into something hideous instead. A healing spell would cause an insatiable hunger as a side effect.

True, such elements make the game more random, but I always imagined magic to be such - dangerous, unpredictable, punishing for the weak and ignorant, like a deep ocean.