Re: M-n in diff mode: use to a better spot?

[Richard Stallman]

    WIBNI there was some automatic way of moving to the right spot in the
    diff buffer, so that C-x 4 a can provide a better default?

Are you suggesting that if point is at the start of the hunk, C-x 4 a
should operate on the file position of first change in the hunk, rather
than on the file position corresponding to point?  That would have the
effect you want, and I think it would not cause problems.