It would be incredibly bad to CGI Yoda in ESB & ROTJ, and insulting to Frank Oz’s contribution to the Original Trilogy with his puppeteering skills. Also, a CGI Yoda in ESB would ruin the original look when you first meet him.
Your first introduction of Yoda, is that of a Jedi Hermit, whose been cooped up on Degobah for 20+ years. He looks dishevelled, crazy, and a little kooky. If they CGI Yoda in ESB & ROTJ, all those characteristics will disappear, and we’ll have a sterilised Yoda, like in the PT.
CGI Yoda works for the PT, because it’s newer, and the technology was there to do a great job of presenting a noble, gentile, wise, Jedi Master, Yoda. But, in the OT, it won’t add anything, but subtract the true essence of Jedi Hermit, Yoda, that everyone fell in love with, when they first met him with Luke.
