I think it would not add to battle length. It will be the same length as clicking examine only it will have a dice roll and then show you what you can see. This could be used to add more dramatic weaknesses as well. Pathfinder 2e has had tremendous positive feedback on their knowledge check and weakness use. Sometimes its what is better for the game. This would make bards useful again. As is... what is the point of a bard in this divinity 3 system?