Pongo:
Yes, what you say is true. Knocking FH by FH style of pin point bombing is still possible, but as you mentioned in some other post yourself, it is widely inefficient. Each passes will need a long traverse from the target to gently turn the formation again, and from what I have found out, in something like a large airbase, by the time you knock out every hangar, the first one you dropped would be popping up again
Eagler:
In truth, I am not dropping before the place I have "targeted". The mark process is really measuring the relative speed, so as other people have pointed out, you really don't have to 'target' the crosshairs on the object when calibrating.
Since the open doors/mark/measure alt process already calibrates the speed and altitude info into the "green" bomb sight, the lead does not vary. If you have calibrated correctly, the first bomb dropped will land on where the crosshair was when the 'drop bombs' button was pushed. The rest of the bombs land traversing forward from that first point. So, what really varies is how long the rest of the bombs traverse from the first drop point - and this is determined by salvo and delay.
Flossy:
Any point on the ground would work. There is no difference in accuracy because in a bomb run, the bombers are flying in a constant speed.
Tthe reason I chose to demonstrate it by moving the stick to mark the hairs on the target was 1) to do it in a lil' bit more immersive/realistic fashion, and 2) the target on the ground is a better reference to use than just any arbitrary point on the ground.
The reason why the target further of in front of you is a better reference than the ground directly below you is, because, it is way easier to keep steady the cross hairs and mark it for 2 seconds. (human sight perspectives and some physics have to do with this.. kinda hard to explain. The further out the crosshairs are, the less they relatively travel, and thus easier to keep still at a single spot for two seconds - try it yourself).