Seem as Project E has more or less been confirmed as Divinity 3, your playable character may even be someone completley new who works with the DK and Divine who both appear as NPC's. Either that or you play as the Divine with powers (or lack of them at beginning of game) explained away by he 'lost' them whilst trapped in the crystal. I doubt you play as the DK as a top down perspective would be just awkward. That's my guess.
By fire and by blood I join with thee in the Order of the Flame!