I'm not sure the story of convergence or secret wars had any real and substantial plot motives other than creating a way yo give a soft reboot of titles. Both of them seem like a basic battle royale where the powers that be can either eliminate titles (that have become unpopular, have run their course, or to provide a jumping in point for potential new readers) or to merge characters variants into a single writing universe (ie - Marvel's 'Ultimate' Universe isn't very popular save for a few characters, so by moving them into the main stream creative universe it opens up more options for those popular characters - Miles Morales, etc). On Deadpool being dead. He'll obviously make a return at some point with the character popularity and the upcoming film. His Secret Wars solicitation has to do with his involvement in 1980s Secret War. The upcoming Secret Wars solicitation is 'Mrs. Deadpool' focusing on Shiklah as the central character. You can likely bet on a Deadpool role or cameo though.