Board Thread:Spoilers!/@comment-25703308-20170920161447/@comment-25375217-20170921155247

I think it depends on how involved Zelena is. If she just appears twice before going back to Storybrooke or whatever, then there will likely not be any Oz stuff (they'll be focusing on her interactions with the current cast instead of her personally). If she is in the majority of the rest of the season, she's more likely to get her own centric and all of her centrics in the past have been filling out the Oz stories. The biggest hole to fill would be the end of her time travel spell attempt with Dorothy and her banishment to the Enchanted Forest. I would say that her father as a Tin Man (at least in role if not in name) would likely be involved with that.

If she really does stick around for Season 8, too, which I would love to see but I'm not holding my breath, then we'll definitely get more Oz stuff from her.