I'm very excited too. I'd love to see a sequel take place right after the Bumblebee movie with VW BBee, Peterbuilt Prime, Porsche Jazz, Datsun Prowl, Lambourghini Sideswipe, Jeep Hound, Vanette Ironhide, Vanette Ratchet, & Lancia Wheeljack on earth. I'm basing this on the seven meteors coming at the end of the BBee movie.
Plus, all those characters showed up in the Bay movies in various incarnations. Except for Prowl, unless he goes rogue (like the IDW series) and becomes Barricade in 2007.
Wishful thinking but one can always dream.