The Directorate is still corrupt, decadent and devoid of popular mandate; it has to evolve into a more authoritarian, centralised state - the Consulate - in order to survive, and Talleyrand and Sieyes know it. They're going to reach out to a General they think they can control, without noticing that in an authoritarian regime, the person who has the loyalty of the soldiers has the whole government. My guess is Moreau, although Augereau has the right streak of mania and slipperiness.
I expect the early Napoleonic (Moreauan?) Wars go much as OTL. Things diverge radically (or at least they might) in 1805, when 1) Moreau might be aware of the fact that he's not an admiral or a ship's engineer, and so allow a shred of competence to manifest in the plans to invade Britain. Invading Britain is still difficult, but putting a sailor in charge of it ould be a good start. and 2) Austria is beaten. Napoleon treated it with leniency because of his dynastic plans. Would Moreau do the same, or would we see guillotines on the Danube or even level Vienna and salt the earth? My take on him is a cautious man and brilliant defensive general, driven in large part by his wife's ambitions - so he probably sacks the place rather badly but doesn't wipe it off the map. If it's not Moreau, of course, anything else might happen.