I tend to always polish mine, though sometimes it's a bit slow process. Also they not always look so polished, because of my limited items or funds for example. I always tend to be on the really low FPs end
Well, it's to be expected, since I often forget to dig with my knuffels and I'm too lazy to play games.
On the other hand more experiments mean creating more unique avis, so I'd say it's a good thing.
I have to generally post more in this thread. I've already found 7 donuts today. It must be this topic - it's a donut-magnet!