It would be interesting to hear what was discussed on the approach briefing, if there was one, prior to tod.
Did the new check airman in the right seat have the trainee scroll thru the map page and point out possible speed/alt hoowahs?
Did he brief the trainee on the approach notes emphasizing dme and altitudes and the configuration which would put them in the best energy state for a stabilized app by 1000 ft?
Did he make the trainee use the sec flt plan for possible runway changes?
Did he have the trainee explain the ma procedure for their primary/sec flt plan as written in their procedures?
These would be just a few of the items, but it lets the trainee know just WHO is in command, and on this flight there was no one in that capacity.
No amount of briefing will fix the inability to fly a visual approach.
if I'm not happy at 1000ft. I will take control
How about if I'm not happy at 1,000' we are going around. If the situation is that bad, starting over vs salvaging is a better choice.