Reply...
Hey Stef,
Not a dumb question, not at all.
For Mezzagosto and Pedestal, largely, no. I DID make some minor ship changes, (Usio's Eagle, Lance, and Lively in place of the old ships, along with UncleTgt's VN Illustrious overhaul) but the fundamental structure of the missions did not change. You could mod those on your own. (You just won't have the city of Cagliari on Sardinia)
HOWEVER....there was a major issue with mission eleven on the Pedestal side. I made a major editing error in the original pack and deleted one of the unit types, making the mission useless. I spotted the error and fixed it.
The same is true for Malta Spitfire. In both cases, the main effort there was to get the scenery installed without having the problems that everyone is familiar with.
Royal Australian Air Force and the PNG campaign are in the same boat, although there are sound packs and the like you may not have. (Like the Blondi Betty soundpack, and BloodHawk_23's mod of Lawdog's Aichi Val soundpack)
The Dutch East Indies is a complete overhaul with a lot of new scenery incorporated from Onnogras' work.
Fall Weiss is another overhaul with Achim's newest Polish airfields.
20th Fighter Group and the Tirpitz missions, along with the Port Darwin pack, are nubies, so we can skip those.