Look, Gang of Secrets was a good episode and I am glad that what happened did happen. But Season 4 missed a really cool opportunity to have Bunnyx come back in time.
Marinette is in her room at night, sees Bunnyx, and she assumes 'oh s*** mission time'. Which since its distracting her, she is down with.
She asks Bunnyx whats the danger, and Bunnyx just goes in and hugs her. 'I know you're going through a lot little bug. Let it all out."
And Marinette allows herself to have a full breakdown. Bunnyx lets her get it all out. (Taking her to the rabbit hole so they have privacy.
Bunnyx telling her she has all the time in the world and "You don't have to worry about telling me too much, Ive seen all the spoilers."
And Marinette is able to just vent everything.
Bunnyx will give her comforting comments ranging from 'Yea... it wouldn't have worked out anyway." or "Yea I remember seeing that before."
Marinette asks if it gets easier.
"No, but you do get better at handling it. I can't give you spoilers, cause timeline shifts can change things. I will be sure to swing by when you need someone to talk to who gets it all."
"You don't need to do that Bunnyx."
"No, I don't. But I want to. What are friends for littlebug?"