fieldlanding,
K.I.S.S. is the word.
Fast accurate and conservative results are what pilots and regulators want.
Think about it - a low V1 on a field that's "too long" means bags of room to stop or fly on if the worst happens near V1.
Conservative and allows for a bit of mishandling, although none of us would need it!!!
Being committed to fly is usually not too bad a thing. The performance engineers have lots of margins built into the calculations. I'm a true believer after spending some time as a technical assistant to our Chief Performance Engineer. A great education in real world performance optimising when we did all the sums for long haul ops in B707 ex MEX and ACA.