I thought about this question just recently. Would Star Wars have been so popular if the DESIGNS of the characters, aliens, spaceships, landscape, deathstar, costumes, etc... were different? And more importantly if so, then shouldn't the designers of all this get MOST of the credit and not GL?
Think about it. Would C-3P0 or R2-D2 have been well received if they were designed differently? Or how about Darth Vader. If we saw a less menacing costume would we not care as much? And what about the Millenium Falcon? If it was designed differently would we be able recognize it easily? Or what if Leia's Classic Harido Bun from ANH were different? Or the costumes? Could you picture Han without his signature vest? Or Stormtroopers in different armor?
These are only some examples. Anyone else have an opinion on this?