Add option to also navigate to markers end point.
Shift+M takes you to the beginning of the next marker in the clip/timeline.
Make it a user option to let Shift+M also stop at the END of a marker.
I use markers extensively and once they are set up I always cut at the beginning and the end of these. Having a short cut for stopping at the markers end will speed up the process.
....a small step for mankind, a giant leap for .... well, at least me :).