Most often, it's just, "what purpose does this serve?". If I find myself asking that at any point during gameplay, it usually means the game isn't polished in some way.
Similarly, "why am I doing this?".
I find myself grinding for materials to craft, "Why do I have to do this? What's the point? What purpose does forcing me to grind these materials to craft serve?".
I don't worry so much about "dialogue" and "story", so long as it's sensible. I've played games written in such a way that they could've theoretically been written by someone under the age of 10. I've played games written by people who are obviously some sort of intellectual or pseudo-intellectual. I don't really care about either, so long as the story being told makes sense, the characters have some defining traits, and it keeps the game moving along without too much nonsense. I don't need "The greatest story ever told" every time I Play a game or "the greatest dialogue ever written". All I need is "is this coherent? Do I care about the gist of what's being told to me?"
I will happily run down the country-side trying to slay the dragon to get the princess back with dialogue and story presented to me in words no larger than 5 letters long, so long as you make me care about what I'm doing and it makes logical sense. But, I will also delete your game if it's full of words longer than 8 letters long and so rambling and incoherent that it sounds like you're getting off on staring at your own belly button (which is probably largely why I've never played more than an hour of anything made by the guy who did Metal Gear Solid and Death Stranding).
Polish, to me, is the thing you do to streamline the experience. To make it smooth. The thing that makes it feel good. Like a polished rock in your hand. Beautiful and so smooth you can't help but rub your fingers across it.
Any part of your game experience that makes it NOT feel like that smooth rock and instead like a rough or jagged edge... Yeah, it makes me go, "you didn't polish your game enough."
