You know, i have been thinking; and unless the rumor that says that Secret Empire exist only because Perlmutter is pissed off wih Feige for kicking him out of the MCU is true; i dont see that DisMarvel is going to keep the Captain Hydra as it is, and given that Spencer said that this is not going to erased with the cosmic cube, here is my theory:
Given that the adult Cyclops is already dead and cant be blamed for this (besides that he is already worse than Hitler), and a Eliza Sinclair reveal wouldnt make sense at all (unless it's the adult Jean Grey); instead Emma Frost is going to steal the rest of cosmic cube for "EVIL" plan (MUAHAHAHA(TM)), so now Hydra and the Avengers are going team up to save the world from someone who is actually evil and not just a huge "#$%&/#$% like the Captain Hydra. So during the fight the Avengers notice that Steve Rogers may be the leader of Hydra now, but it's not that different from how he used to be, so they forgive him and no one speaks of this ever again.