Would you prefer it for speed issues or is there another reason? From my own experience, i really cant tell the difference between having the buttons stay seated on top or go in (though it took me a while to get used to that) I get around the same speed and I don't feel like my fingers are catching the sides that much.

Very nice accordeon.

In my opinion I would make the following changes

NO red anywhere...... incongruous with the rest of the accordeon.. makes it look cheap
NO gold on the flappers...makes it look cheap
No metal corners, ruins an otherwise classy design and superb wood working...

I much prefer mushroom buttons... professional Italian accordeons use them to great advantage.. eliminates many problems...
but that hideous red felt below the buttons must go...

Otherwise, very nice accordeon.