Although these are in theory only updated every AIRAC cycle, actually countries update them all the time, when they discover errors in them. If we had a prompt, you would see it often.
Also, it's quite wasteful to download entire AIPs all the time we we would really rather people downloaded only what they need. There's a setting that automatically downloads all the plates for the airfields that are part of your route.
These two factors mean it's unlikely we will add anything to make it more straightforward to download/update all AIPs.