And of course one reason they lost at Midway: a fleet carrier and several smaller ones(?) sent to Alaska instead of concentrating their forces at the critical point. Leaving Shokaku and Zuikaku in Japanicon didn't help either. Post-war they ruefully compared their own slowness to repair the damage from the Coral Sea to the US repairs to the Midway.

"Victory Disease", or as the Greeks used to say, "after hubris comes nemesis".