You're trying to give imaginary feats to someone which is silly because we can never guess what abilities an EMS itachi would get, only kishi can know that which is why this is pointless.. Minatos BM wasn't imaginary, he has feats for it and jutsu, BM minato is far from fanfiction, he is very real and not something I had to make up to make just to make him seem stronger. And I wasn't talking about BM minato just now so why are you bringing this up? Enton??? Exactly my point, you're just guessing what itachi could possibly have, Sasuke was using Enton with MS because his skill with Amaterasu was better than itachi's, it had nothing to do with EMS.
And Susanoo can't be re summoned instantly. When Gaara removed Madara from his Susanoo, the Susanoo had to first deactivate itself slowly before Madara could re use it again. Why do you think Madara had to use Rinnegan to absorb Narutos rasenshuriken instead of just "instantly" reactivating Susanoo, it's because he couldn't. Please stop trying to make up your own logic, everything about Susanoo is in the manga.