You also might have had an Indian ocean or Australian attack at the same time as Midway if they decided to split the carrier groups up. You could have ran another raid on Darwin or attacking the Ganges delta to support the attack from Burma. Another attack on Ceylon would be in the offing also.
All of these do little but produce a few headlines, None of them do anything to help Japan achieve its long term aims.
You have to remember that in 1942/3, all carriers could do was raid or attack fleets. It wouldnt be till 1944 that carrier task forces could slug it out with a land base of any size (and even then it worked mainly due to the isolation of the Japanese bases).
Japan can raid all she wants, without the logistics and manpower to do something with the local siperiority gained, its useless. And any sort of landing on a significant land mass just falls into the open trap of attrittion....