"Unique". Sometimes slight variation is as (or more) interesting than something completely different. Take the variations on themes in a Beethoven symphony or Charlie Parker solo as examples, or comparing performance of Grateful Dead songs over the years. A little variety in similar things can be delightful.
I fully intend to play every origin character, which means minimum 1000 hours before even considering Tavs. There will be a lot of similarity, sure, but the little beats where Shadowheart's response is different from Asterion's will be extremely interesting.
