Yes exactly this!
I think by now most of us are working at very high resolutions intending to scale down to our target sizes. @nyeweb is spot on in that the current implementation feels backwards. We need to scale it down, not up.
While we're at it... ;) How about we go crazy and replace the @1x @2x, @3x buttons with a dialog where we get to set our own scales. Android often ends up around @1.5x, and for web work the scales are vastly more dramatic. You could start with scales for a 5k iMac and export all the way down to mobile size, optimized for slow connections.
Either way, I'm glad to see this feature started and excited for where it goes.
