There is the chance they'll bring him back the way we all love him. He wouldn't die from being decapitated, if we know Deadpool, so If his body found his head, he could put it back on, and probably wake up from his mind wiping he went through. Then he could potentially get a red jumpsuit, cut the threads holding his lips shut, and grab a couple katanas and pistols. Cause in the beginning of XMen Origins, he was sarcastic and had a sense of humor. One can only hold hope for the future, or days of future past, or later XMen movies. Or the Avengers 2 or 3. There are a lot of chances for Marvel to redeem themselves on this one.