rananmim
you are quite right when you say the seeds of overrun are sewn during the approach.
isn't it funny, how we can't communicate here on a computer about middle markers, yet expect people of different nations to communicate in the cockpit?
FWIW a middle marker is an electronic navigation aid...located prior to the runway (in most situations) about where DH is on a standard ILS.
The center of the runway would mean to me the centerline
the middle of the runway...could mean the centerline or halfway down the runway.
so many communication difficulties and we can type this stuff in the safety and comfort of our own homes.
There are few airports in the world that I wouldn't land at the 1000' fixed distance marker.
Edwards air force base might be one. Vandenberg might be two.
all others...and I mean it...all others demand us to do our best, to be ready for the worst day.