Though, I think the reason why they chose this route might also be because Gale would otherwise not have a cut scene that concludes his character arc. His other concluding cut scene is blowing him up, which you might not want to do, so there needed to be some other visually special thing that ends his quest. At least that would be my guess.
That's a good thought. I wonder if a similar thought played into the origin characters losing their individual Daisies (eg. Vlaakith for Lae'zel) and all getting the same Guardian. Most people don't play a game like BG3 more than once, so, I wonder how much of it was like 'give people all the content in one run, streamline it, make it obvious.'
