After they ruined the Character of Vader, Fett and Yoda in the prequels who but a prequel fan would see a spin off film with a cgi prequel Yoda, or Boba the Jango Fett clone.
Honestly Yoda with a Lightsaber demeans the character he was at least for me in terms of empire strikes back, and Boba no longer being mysterious also ruined any appeal the character had.