Ah, the faraway look............. My tutor's wife commented on this, once when I was playing; "Youre getting that look that X has when he's playing".
As Rowan has said, you've got it all there on a two-row B/C button accordion: apart from the keys I mentioned above (24th July 9.09am), tonight I was playing in E major (found the G# and the D#) and F (found the B flat). Have even been known to play in F#major when the singer couldn't quite reach G.
As for "punchy action", I was taught to use the bellows smoothly, almost imperceptibly, but then I don't use a lot of L hand, in common with many B/C players. My favourite tunes are nearly all slow airs, (maybe a reflection on how fast I can play!)often those originally written for fiddle.