emperor was based largely on the last few dune books namely god emperor by FH (his son is crap at writing them anyway). the tielaxu were more f**ked up than the harkonens, and the corinnos were good. also the face dancer is based off of the carecter sylux who tryed to assasinate leto and later revive tilexu (one other thing i noticed is that the sard generals are in the david lynch movie dune as background carecters. also the ending was cool espacilly the emperor worm (witch is based off of leto 2, you are right there)