Forgive me if someone else made this point but the whole Disneyland Forward movement to expand parks has been gaining a lot of steam lately. There were public meetings held just yesterday and and Disney is supposedly in active discussions with Anaheim to clear the way for plans.
If I'm reading it correctly, Disneyland Park will expand to the north of DLH where its parking lot currently sits and DCA would expand to the south wrapping around DLH and Paradise (Pixar) Pier.
The
point charts for VDH may reflect Disney's belief that within ~5 years, the location benefits of Disneyland Hotel will be just as significant as Grand Californian. For traffic flow alone, it makes sense to have additional gates into one or both parks from DLH.
(Assuming disney follows through.)