"the correct answer to the question would be a tendency to approach too low."
I think part of the problem here might be the word "tendency". As I see it (and we all seem to understand the problem, just not the answer) if I was on the desired glideslope (PAPI/ILS/etc) and I knew it to be a downsloping runway (as in down and away from the TD point) then I would anticipate feeling as if I was low on the visual GP and would ensure to position my self accordingly at the transition. If, however, I was making a strictly visual approach to the same runway with little forethought as to the slope then my tendency would be to establish myself high on the desired glidepath in order to accomodate the visual clues.
Have I sufficiently straddled the fence for everyone?
