I don't really think JP needs another E-ticket. Kong is basically taking the place of another JP E-ticket. Trikes can only fit a D-ticket... maybe a carbon copy of Transformers, but I really wouldn't want that for JP.
No jeep tours or Helicoptours
nowhere near enough room. A nice family coaster, a small AA petting zoo, and Omnimover are the most I would expect. Some upgrades to JPRA too.
not to mention IOA will have 9 E-tickets after Kong opens... aside from one in Seuss and one in LC, I don't really think the park needs anymore. C-tickets and D-tickets are what IOA needs.
- - - Updated - - -
Imagine if Hotel 5 was JW-themed...
but I definitely think Universal is prepping for a JP expansion, just saving the ideas until the new film comes out next year. It definitely sounds cool!!