Whoa, you've rolled in a whole load of issues there, intruder and even though I agree with quite a lot of what you say it doesn't necessarily bear on the topic. It sounds like your airline has a robust set of procedures. Good. Also an entirely different set of tools to what AF (or I) had available. You referred to V ref chart?? In most airlines using laptop computer performance it is designed as a stand-alone device not used in conjunction with any chart. Presumably you have a set of charts covering all your destinations? With stand alone computer performance there is no "quick check" like you describe. Either complete a full calculation with a parameter in every box or don't do anything.