Originally Posted by
pineteam
I’m not adding « couple of knots »on some aircraft because I’m scared to stall but to have better control while flaring and to lower the pitch on old A319 with conf 3.
My opinion is that it's psychosomatic, i.e. would only happen if the pilot believes so.
Your own picture:

(click open in new tab to expand)
The pitch decrease is 0,74 degrees. Yet at the second shot, the A/C is accelerating and V/S is 800 fpm, not 700 anymore.
- I would agree the pitch changed by 0,6 degree, with all other things equal, due to the speed increase of 3 knots as photographed.
However, the Vapp increment was 2 knots. Pin - objectively - you are targeting a pitch change of 0,4 degree
: "to have better control while flaring and to lower the pitch on old A319". Come on.
Still, I
do trust your word it is better. My claim? It's your mind playing tricks, not the aerodynamics/mechanics. You may feel more confident, trust the machine better, and be relaxed. That IS the mindset for a nicely controlled and well-organized landing. Some guys just do not need to add the 2 knots to get there.
You can be one too. Do a test, stop adding those tiny bits for 2 months and see: did the landings get worse?
Or be slick: propose to your F/Os: "Do you think those 2 knots really make a difference in handling a 50t jet in seafront breeze? Is it not just the yellow Vls mark scaring the hell out of us and putting us on the far side of the stress-performance curve? Would you like to try this one landing without adding a thing?" And watch them master it regardless.
my 5c.