Boba Fett is the Tom Bombadil (Lord of the Rings) of the Star Wars universe. Do we need a solo movie about him directed by Logan director James Mangold? Meh? I know I hear ya...I feel like it's a big NO IMHO. Fett is a great character because of his design BUT let's face it, he gets taken out in ROTJ in such a chump ass way. I loved him as a kid but the more they explained his past, like being a clone etc, the less cool he became for me. Sometimes it's good to leave well enough alone.
Perhaps they will follow his escape from the Sarlac Pit and imagine him retired, selling galactic Boba, like in this poster I created back in 2013.