After Castiel’s unceremonious departure from the show at the beginning of this season, fans were understandably upset that he never received the farewell he (and we) deserved. Interestingly, Misha Collins did not have a problem with how Cas’s “demise” was handled:
"You know, it was amazing when that term 'closure' was bandied about. Some fans that I talked to were upset that Cas didn't maybe get a proper burial or a proper period of mourning. I kind of don't really agree with that. I think Cas had been on a road of death, and there was a mourning going on for him for the entire last several episodes, which happened to bleed over into season 7. Cas, as everyone knew him, had been gone for some time by that point."
He also reassures us that his upcoming three-episode arc will probably not be the last we will see of Cas:
"I haven't seen the final episode [script]. If, by closure, you mean salting and burning the bones, and permanently, irrevocably, eradicating the character -- then no. That is not the case…I think that Cas is getting his due attention at the end of Season 7, if that's what [fans are] looking for.”
Would he like to come back in Season 8, if the show is renewed? Oh, yes:
“I had that conversation with Sera [Gamble] and Bob [Singer] recently, and told them 'Hey, just so you know, I would love to keep working on the show.'"
And we would love to have him back, wouldn’t we, fans?