While I believe Disney should not copy the 1967 design, (for some reason I thought it was 1966), a prevailing ethos I have seen on this discussion board is that Disney should look at the reasons the 1967 design was made. Surely a modern design could capture both the optimistic view from 1967, while giving visitors the feeling of a true Tomorrowland. I think the Peoplemover is the prime example of this, guests still want it, OSHA will not let Disney put it back in, if anything is to be done Disney must capture the spirit of the original Tomorrowland and bring in an exciting and fresh new ride (I recall seeing blue sky concept art of a KUKA arm travelling around the land, I think that would be a good place to start).
I also agree applying a single theme such as Star Wars, Tron, or any other brand would limit Tomorrowland's potential. Instead I think Disney should bring those franchises in through individual rides or as lands in a third gate.
Also amen to the 'Frankenstein' name. I put the question as to "why is the land is so hated" to bring out such a response. Tomorrowland is one of the most attraction dense lands in Disney (not to mention Space Mountain and Star Tours are some of my favorite rides), yet Tomorrowland cannot hold a theme together for the life of it. The reason fans hate Tomorrowland so much is not because of the rides, but because it is the "Frankenstein" land, holding to much onto the 67 design with patchwork bits from the 98 refurb. If any progress is to be made the facades need to be redone as drastically as the Sunshine Plaza-Buena Vista Street conversion.
A bit off topic now, but I was hoping a rebuilt Tomorrowland would view the 1967 design as a sort of historic past, the same way all modern cities have grown from older communities. It would make a great hidden mickey to see a timeline detailing a rebuilt Tomorrowland's history mirroring the real history of the 1955 version to the 1967 then through 1998 onto the rebuilt land. Plus that would be one of those details which would help establish a back story for the land. Plus us geeks would love it.