Bingowings said:
Think it through.
Other than his work on Jedi what work of major significance did Marquand do?
Burton was a theatrical and cinematic giant, with a huge body of work behind him many of which were filmed at Pinewood.
It's well known that Richard was hired because he would not make waves, would be on budget on schedule and act as yes man to Lucas' production requirements.
Thats really it in a nutshell. Nothing against Marquand, but he's hardly deserving of having a stage at Pinewood named for him.