So during my reading, I've taken notice of the War of the Bavarian Succession, and Austria being refused help from France which was then interfering in the American Revolutionary War.
After the unpleasantness of the Seven Years War, Britain and Austria were no longer friends. But given the situation, might Austria send out feelers to the British government? Sort of, I'll help you with the Americas if you help me with Prussia and we'll see where that leads.
Would Britain accept? What happens to the Americans? Will the French Revolution start years earlier? Can Austria get Silesia and/or Bavaria, or will Britain just use the Austrians to distract France and then 'forget what they were doing'?