Lannes survives Aspern-Essling?

Lannes was arguably one of Napoleon's best marshals, and the lack of generals as good as Lannes and Davout has been blamed for Napoleon's increasing difficulties during the Invasion of Russia and the War of the Sixth Coalition. However, he was mortally wounded during the Battle of Aspern-Essling. How would Lannes have been employed if he'd lived, and would it change anything?
 
After the war with Austria is wrapped up, the two outstanding theatres are Iberia and Russia in the future. Either Lannes would end up replacing Soult or Jourdan opposite Wellington, or in the Russian campaign, he could command a corps or perhaps a subordinate army during the invasion. I would be interested in seeing him leading the right flank force OTL under Jerome; if that force had pressed Bagration more vigorously and pinned him in place, Davout's corps from the main army might have enveloped him. Destroying a large Russian army close to the frontier would have a major impact on the campaign as a whole.
 
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