Lets go back into History...
Disneyland Hotel was built in the 50's
A second tram route (the first servicing the parking lot) goes from the Disneyland Main Entrance to the Hotel Main Entrance.
The Disneyland Monorail was built
An extension of the Monorail was added that takes it to the Disneyland Hotel.
Construction of Downtown Disney starts, which requires the Monorail to shut down for part of the project, and that they have to change the tram service.
A new tram starts for the newly built Lion King Tram area to the back of the Paradise Pier Hotel (very close to the DLH).
Construction of DtD/DCA is finished, and a Double Decker Bus route was added from the Paradise Pier Hotel to the Parking Structure (and the Lion King Tram still services the hotels). (Nice full circle loop service).
September 11th happens.
Shortly thereafter, the Double Decker Bus service is eliminated due to safety concerns, even though someone could park just as close to the DLH as the tram route ran... (Editorial comment).
Then in 2002 or 2003, the Lion King Tram route is shorten and stops servicing the Hotels and the Simba Lot (Only going to the Timon Lot).
And that is where it remains, the Paradise Pier Hotel is the same basic distance as the Candy Cane Inn and the Howard Johnson's (about a 6/10th of a mile). The CCI offers a free shuttle every 30 minutes, and the HoJo's is part of the ART system that runs every 20 minutes.
ART, which is run under contract with the city of Anaheim and Disney made arrangements that the Disney owned hotels would NOT be part of the ART shuttle service.
Downtown Disney shops and restaurants do not want a shuttle service, as they want the Disney hotel guests to be forced to walk thru their area....
Now, if I had my way...
Add a new ART route, one that starts at the Lion King Tram area and then goes south on Harbor, and makes a right on Katella to Disneyland Drive. Make a right at the corner (Screamin) and then goes to the Grand California Hotel entrance. Back to Disneyland Drive, and a left onto Magic Way to the Disneyland Hotel. Another stop to load/unload passengers, then back to Disneyland Drive. Head south with a stop at the Paradise Pier Hotel. After the PPH, take Katella and Harbor back to the Lion King Tram area.
Why doesn't Disney do this???
A few reasons IMHO...
Also, the Downtown Disney issue.
And do you offer it to just hotel guests, or do you also offer it to those that want to eat/drink at the hotel restaurants. (Also a DtD issue).
Another issue is that the Tram would run on city streets, which would require a Bus Driver (that need a special license) and a street legal vehicle (similar to the CM shuttles), and not a Tram (open rows) and a driver that does not a need a Class B license. Plus the vehicle would have to pay fees to the State (aka license plate), unlike the current trams which remain on private property.
So what can Disney do.....
I think building a tunnel under Disneyland Drive is the best solution, This way, they can return the Lion King Tram service to the Paradise Pier Hotel and still use the basic Tram (instead of a street legal bus). Hopefully this will happen, as there are rumored plans to convert the current Timon Lot into an extension of DCA and/or a new Hotel. The underground tunnel could take cars (coming from San Diego and getting off on Disney Way, no real other option) plus the Lion King Trams to a new Parking structure that is built on the old Simba Lot next to the PPH. The Tram would service the Structure and the hotels.
And that is a nice long term solution.
But for today, I would add an ART route as described above that services the three Disney owned hotels. (and I would make the ART part of the Hotel Resort fee, even though Disney wouldn't like it, as it would add to its costs). Those folks wanting to dine at the hotels would have to pay the ART fee.
Alas, Disney is too cheap, even after charging from $200 to $500 for one night at its hotels.