Keep in mind: he’s not coming back to life but still a multi story arc. So I find this…suspect to say the least.
As for my reaction to this: I’m….confused and frankly a little irritated. Like, they just NOW came up with an interesting idea for Robin? I guess I shouldn’t be surprised but it feels like they are either 1) placating the fandom in the same manner they do with SwanFire or 2) they got a cool idea a week after S5B ended and were like “oh well. Our world allows with this with its inconsistent rules. So why not! #Magic!”
If they’re really not resurrecting him, then just what are they doing with him for multiple episodes? Sean said that he wasn’t interested in returning when asked back in May, so just how did Adam and Eddy convince him to return? Multiple episodes implies something other than flashbacks or a vision/dream sequence, too.