Slim,
The aircraft was RWY LWY at the higher weight, as your actual weight is lower, you will actually be WAT or climb limited! So the improved climb concept works!
Alex,
90% of our B777 operations are conducted using assumed temperatures, as there is a big performance difference between an actual OAT of 50° and an assumed temperature of 50°/OAT 30°, the aircraft isn’t as limited as you might think.
SR71.
Have you ever considered optimized V-speeds?
Mutt