Napoleon wins at Waterloo, then what?

[FM WarB]

Some points:

The 17000 man Halle detachment contained only one brigade of (non Peninsular War veteran) British troops.

Napoleon gave the Allies a run for their money in 1814 with much smaller forces than would have been available after a french victory against Wellington and Blucher. And he had Davout in Paris, training his reserves.

Wellington and Blucher were Napoleon's most successful and determined opponents. The Saxon mutiny in the spring of 1815 suggests less than universal enthusiasm for the Allied cause among former Confederation of the Rhein members. Potential rifts between the Russians, Prussians and Austrians suggest Napoleon would have had a chance in 1815 after a victory in the Waterloo campaign.