Wow, you are asking other people for PODs on 10 countries? Go and do some research! I've spent the last year on and off researching for my TL and it's still not ready.
But I'll give it a try. Realistically, you can't really tear apart the Habsburg Monarchy right now. Best you can do is this:
1) Prussia takes Silesia
2) Bavaria takes Upper Austria and Bohemia proper
3) Fleury dies a bit earlier and Belle-Isle has more power, convincing the king to send additional French troops to Bavaria, preventing Austrian conquests of Bavaria and maybe even invading Tyrol, putting Austria on the defensive on all fronts
4) at this point the Maritime Powers will intervene with the Pragmatic Army, but the French defeat them in an ATL Battle of Dettingen
5) so far, Austrians are holding their own in the Duchy of Milan, but defeats in the north prevent any reinforcements from coming to Italy and they will be in a bad position
6) Prussia will leave the war once MT gives up Silesia, so will the Saxons once they see there is nothing to gain. Austria focuses all her troops against Bavaria, which means you will need huge French support to prevent Austrian reconquest of Bohemia and Upper Austria
7)luckily, by 1744 France openly joins the war and invades across the Rhine. Louis XV can't catch the smallpox like OTL so the campaign can proceed. Hanover and other north German states won't move because of their fear of Prussia. There should be a huge battle somewhere in Southern Germany that the French win.
8)in Italy, French, Spanish and maybe Neapolitan troops converge on Milan. Savoy might try to fight but if they see Austria is failing, they might jump ship and join the invasion. As in the War of Polish Succession, they will drag it off.
9)in 1745 there is the Jacobite rising, causing problems for the British and a massive French invasion of the Austrian Netherlands under Maurice of Saxony that results in them taking Brussels
10) in 1745 Charles VII should survive at least a couple more years and then have his son be elected
11)sometime by 1747-48 the Austrians are completely exhausted and make peace. Prussia gets Silesia, Bavaria Upper Austria, Bohemia and the Imperial title(and maybe Breisgau), France gets some forts on the Rhine and, if Louis doesn't return it, at least parts of the ANL (maybe Hainault, bits of Luxemburg and some towns in Flanders like Tournai etc.)
Savoy gets bits of Milan like OTL but Austria must keep at least the core of the Duchy so there is some balance (Savoy would never allow the Bourbons take all of it)
Infante Felipe gets Parma and Piacenza
There, that is a rough sketch with a lot of things skipped
