What may be a good discussion is the various formats of parks and how their layouts differ.
I think the "hub and spoke" layout is very good (it works in Washington DC) in that is has what Walt called "the weenie", the icon that draws you through it. Once at the hub, you are drawn by the land icons. The castle is also a reference point wherever you are. DHS is a variation on this and AK is as well.
TDS has more of less the Universal Studios Orlando loop design where you are on a linear circle, but uses the Volcano as the central icon. "Islands of Adventure" is the loop but more literal with the connective "Island" bridges. This layout was made popular as the "Duell Loop" (for Randall Duell the designer) in Marriott's Great America and Six Flag's Parks in the late 60's. you are forced to backtrack in the loop or go all the way around to get to a particular attraction out of the linear order. EPCOT is kind of a hybrid, in that it is very hublike at Communicore in Future World and looped in WS.
They all have been modified to address walking issues as the lands in the early hub design of DL made you walk back to the hub and then into the next land. This was changed when they blew paths through the lands in the back to allow say Frontierland to connect to Fantasyland from the edges (Big thunder Trail) or added "lands within lands" like New Orleans Square.
Thoughts? What is the ultimate layout for a Disneyland? is there a better design ?