The real issue here is the need to be able to do 2 things:
Translate the external view - not currently possible
Save custom external views - also not currently possible
This would enable the fish-eye effect to be changed to whatever you want by adjusting the camera position and the zoom level, as other posts in this thread and others have highlighted. You can do all this with the drone camera and the drone position is “remembered” during the flight, but cannot be saved so is lost if you change it or change flight.
This article covers all the current camera options https://flightsimulator.zendesk.com/hc/en-us/articles/360016003159-Camera-Overview
There is a line in here in the external camera section that says “At the moment, you cannot save custom views in External view”. That suggests this might be a forthcoming attraction, but who knows when.
It might be worth changing this thread to be specific about the changes needed to get more votes, or flagging to the moderators to merge these threads into one (as they are all essentially similar):
https://forums.flightsimulator.com/t/global-camera-save-slots/155261