As a long term player and DM I am beyond excited with what you have show so far the game looks amazing. I also will not confess as to how many hours that I have spent playing Divinity 2 (Too many). You have a very rare opportunity to allow players the chance to do something that comes up at least once in every long term campaign setting. Everyone at some point or another wants to play as the Illithid/Mindflayer. The intro cut scene gives me some hope as you do have a tadpole in you but their should be some way to allow the Ceramorphosis process to come to completion and allow the player to be an Illithid. Their should be consequences to being an Illithid such as not allowing the player to continue with allies or in a party setting. Or even being attacked on site by common townsfolk. This would provide a lot of interesting game play hooks and also allow players the chance to fulfill a long time fantasy.