Absolute support from me! Anything that makes natties more valuable gets a big thumbs up. I already love what the shrines did to nattie value with the elemental effects. This could make it even better, especially for Kir's Quest! I am constantly saving up for quest pets. That's just what I do.
Plus, I'd love to be able to just have rare color pets again. I've turned in albinos I wanted to keep because Kir took higher priority and I knew I'd never be able to afford them from someone else. I would dump so many creams, sepias, and natties in this system you wouldn't BELIEVE.