Because I am an idiot, I often forget to choose attack as a mission type prior to leaving the hangar with a bomb and rocket loadout. Sometimes, when time is not of the essence, I will land and .ef just to pick attack.
Having the software assume a mission type would probably cause just a many problems.
What I do think could be easily implemented
is a question screen similar to that used when starting on a mission. Anytime a player spawns and the craft they are in is multi-mission capable, put up the question. No ambiguity, no forgetting, the code is already there. Seems simple to me.
F.