They've not said much about those characters yet, true...
Hunter & Bobbi: Bobbi made it pretty clear she doesn't want to be out in the field any longer (or maybe for a while). That whole Ward stuff was just pretty hard on her. So that connects pretty well to the storyline with Fitz and (the lack of) Simmons: Bobbi works at the lab together with Bobbi, and it's kind of a win-win situation (though I doubt that Fitz will see it that way
). Hunter? He'll probably be his old self, maybe trying to help Bobbi in any way he can? But he's still a field agent, so he probably will do stuff for Coulson too.
May: I dunno. I guess she'll be returning from her time off by the time the show starts, that would make sense. But how will she be? I hope we get to see the less-icy, quirkier version of May for a while! Especially when the Blair Underwood-character (damn, I'm so bad with names of guest characters, sorry
) gets back into her life.
But I hope she's returning to do field work soon, she's a top notch field agent and we wanna see her fight!
Ward: I really don't know. Like they said Hydra will be laying low for a while. But that doesn't necessarily mean Ward will be sitting on his ass, doing nothing. He's probably gathering more Hydra agents, forming a new head of Hydra, an army so to say. I'm curious how much of Ward we'll get to see at the beginning of the season. And if his storyline(s) will tie in to anything related to the storylines of our favorite SHIELD team