I'd say they're waiting for after spiderverse but I'm not going too put much stock into it. I'm pretty sure we all know Otto is going to comeback in some form though I currently wish he wouldn't. Mainly because I don't by that he learned a lesson after Superior. Honestly I feel Otto gets a lot of undeserved sympathy. He definetley wasn't misunderstood. When it comes down too it he's not that different from Gobby. So when he does come back and let's be honest we all know he will. He should suffer the consequences of his actions. Though I doubt that would happen.