I agree. Certains functions are way more complicated and hard to show value for than others, which is really hard to comprehend for some managers. Functionalit

I agree. Certains functions are way more complicated and hard to show value for than others, which is really hard to comprehend for some managers. Functionalities like undo/redo take a lot of planning, coordination and integration efforts than others like a simple export function, but good luck selling that to any marketing or product owner for xx manndays. I still think that this subject is way too specific to be generalized like this, but general thumb of rules still apply like good estimation and technical planning.