Thank you for taking your time reading through my long post, Raze! Now I'm actually thinking of giving Divinity 2 another chance. Maybe I can pretend those instadeaths from touching the towers never happened and pick up right where I left off?
I'm happy to hear that there will be no level scaling, also. Generally it seems like the design philosophy behind Original Sin is going to be to my liking. If it turns out that the Once-In-A-Lifetime Challenge wouldn't work, perhaps I will play the game in coop over LAN already from the start.