I have postulated this before: The new spin-off to feature Bobbi and Hunter with Kara and Ward. I would now add on Mac. This makes sense to me. First, Kara is in love with Ward and will probably feel indebted to Ward for helping her recover from Whitehall's abuse. I could see her confronting Coulson after nuShield's end to bring Ward back in the fold. From this Simmons' actions could come to light.
Then the new series will start with 4 of the five having to learn to forgive the others (Bobbi, Hunter, Ward and Mac). All of them learning to grow as people; especially Ward. I could see Hunter being a good counselor for Ward, teaching Ward that bad things happen to everybody. This combination just makes too much sense to me. Especially since it has already been said that the new show will feature Bobbi and Hunter.
I don't see Ward jumping to a new show, his story is too connected with the other original mains for the character not to suffer with such a move. Yes, it does seem like his character has been written into a corner now, but all that will apparently change by the time the season comes to a closure, as hinted by the TV Guide Magazine article. Also, they've dropped too many hints of his family in the first season for me NOT to believe it'll be important down the line, and they've barely scrapped the surface so far. Thomas has yet to be introduced (officially at least, I still hold on my belief that Lincoln is Thomas, but by now it seems to me to be something that they'd want to leave for the finale to reveal as it may lead to the end of all the ambiguity regarding Ward's character this season), there's a sister out there that was randomly added to his family that we know nothing about except that she exists and I still hold on the hope that Christian will be revealed to be alive if only because his death was massively stupid: he knows his brother tried to kill him before, knows that he a skilled soldier and is completely unconcerned about his own security? Seriously?