Absolutely agree with this suggestion. Incantations just make magic being cast feel more impactful to me.
It's also a nice aural cue in BG1 and 2 and could work as one again in Project Eternity, when you entered a new area ,even before having really accessed the situation, and you heard a chanting like "Praeses, Alia, Fero" you knew that there was a mage with the enemy.