Yes, that’s a nice idea. Indeed it doesn’t do it at the moment, so you have to go back and drag/snap the sample.
I tend to approach snap points in a slightly different way. I move the region (zoomed in) and then set the snap point using ‘snap point to cursor position’. So, I generally turn Snap off, then drag the part to line it up in the project window, audition it, then turn snap back on, line up the cursor on the barline and set ‘snap point to cursor’ (using a shortcut key). This way I get to audition the point.
Mike.