Since the moviegoing public has accepted that Antman can mass-shift, I reckon the public is ready for some G1 Decepticons. Particularly in regards to Soundwave and his cassettes. There's some reasoning beyond the mass-shifting debacle why Megatron probably won't be a gun, but Soundwave isn't really Soundwave without capturing his 80s self. I'd love to see a Marvel Type Soundwave, career advisor to many Decepticon leaders not Megatron's personal bootlicker. Likewise, I'd like to see his mind-reading and espionage capabilities be central to his story role. Perhaps when Starscream and his Seekers make noise that keep the humans and Autobots occupied, Soundwave and his team could use the opportunity (and mass-shifting G1 Style) to gather real intelligence on S7, Earth's resources, what happened to the 3 Decepticons already sent there, and Megatron if he is indeed frozen. He can confer with Shockwave, who probably doesnt want Megatron back in the picture, and undercut Starscream's own ambitions, eventually making the decision that he feels is best for the Decepticons and therefore Cybertron. Soundwave deserves a true renaissance in classic form on center stage imo.