Okay, I have an addition to the Hollywood area:
Use one of the storefront areas at the beginning of the Hollywood area (either that or add this to the second part of the left side, between NY and LA) and add one of those song recording studio things. Well themed to either land, and also is a money-maker! (not to mention really fun... almost an attraction!)
Cannery Row redone as a Chinatown, SF style (could move storefronts from SF area to here, as SF area would be redone painted desert or texas style - complete with BBQ and line dancing).
It would have a short trolley line (think Jolly Trolly only legit) extending from ToT end (hopefully a walkway could be opened up there, not entirely sure if Bug's land gets in the way or not) to Paradise Pier/New England end.
Add fancy Chinatown gateway modeled after SF one
As NOS has "every day is Mardi Gras," Chinatown will have "every day is Chinese New Year" thing going on in streetmosphere (no Nigel, no fireworks) with music, dancing, dragons, etc
Shops selling typical Chinatown merch like fans, parasols, jade, silk tops & pj's, toy drum thingies, etc
Lucky Fortune Cookery (or whatever it's called) can stay
Entry Plaza redone as Revolution-era city OR 1950's (say, 1955? )
Condor Flats redone as tribute to American industry/transportation. Possible Detroit theme here. Add more rides themed to cars and transportation. Needs a new name.
Had some more thoughts on the main street/entry plaza area. I like the idea of a 1955 theme. The New England area would already have the revolution theme going, so 50's would be cool for entry plaza. Plus, it affords some great entertainment and merch opportunities (as well as requiring less change to the building exteriors, such as the train one).
So Entrance and Entry Plaza CMs would be in 50's gear. Poodle skirts for the gals, collared shirts with atomic symbol prints for the guys, and letterman sweaters for all during cold weather.
Think of the merch opportunities here: poodle skirts featuring Pluto, or Minnie Mouse on the telephone (you know, the skirts with the telephone cord on it instead of the poodle leash). Saddle shoes with disney characters. Mickey Mouse Club vintagey merchandise. Vintage-looking DL merch. Googie architecture (boomerangs and atoms) and bright colors for all, yay!
Oh, also, re-engineer the Flying Saucers ride (eg: make the idea work consistently using modern technology) and put it in the industrial area.