A person once told me there are 4 things useless to a pilot;
- runway behind,
- fuel in the truck,
- altitude above and
- a birthcontrol pill in your pregnant wife's hand.
Respecting all philosophies and practices on fuel saving, balanced field T/O etc. etc. the statement on the
uselessness of these things when present remains valid.
Does that mean all procedures are wrong and need to be changed? No.
Does it hurt to depart full length when available? No.
Maximising profit and time available does not take place during intersection take-offs or departing minimum fuel when indexes are similar. It takes place during the organisation of a controlled turnaround and the execution of it. For scheduled operations that is. There is a difference between what is wise and what is permissible. A clear example of that is work and rest regulations. Don't hear many folks that suffer from the "hurry-up-time-is-money" syndrom advocate that though
.
The same applies for speed control on final but that is off topic.
Cheers.