Hey Phil and welcome to the forums!
That’s a great idea, but I’m afraid not currently possible in the current set-up.
I’d be interested in knowing exactly what you have in mind since the Facebook import itself is already its own tab in the Event Import options. If you’re willing to share more detail, it would be awesome if you could open a new thread in our feature request forum so we can get a clearer idea over there and allow other folks to vote on that as well.
Sorry I don’t have a solid solution for you but does this at least help answer your question? Please let me know.
Thanks,
Geoff