My guess?
1) DLR vacations do not include planning like WDW. They barely have dining reservations and there is little planning on which park you will goto. So a system aimed at touring packages and schedules as a benefit really doesn't match up well
2) DLR's onsite hotel capacity is a tiny fraction of the attendance.. so systems like integrated payment have much less benefit
3) Maybe the infrastructure was planned to be based in Florida so it makes sense to do a shakedown locally rather than cross country
4) Maybe TDA wasn't willing to be the guinea pig.
I think this is an interesting topic. How will it manifest in DL.
As flynnibus said, the visitors to DLR are completely different than those at WDW. More day trips, more spur of the moment trips, more APs, etc.
I don't see how they can kill regular FP out there, since such a small fraction of guests will be using something like the Experience site. The standby numbers would be far greater than FP+ that was pre-booked. The legions of fans and APers out there would revolt.
What about the bands? Would they be any good to a day guest? Would an AP holder be able to put ticket and payment info on the band or ticket card for use whenever they visit? If not, why bother? You could just forget about NGE for a huge number of DL's guests.
I really don't see how NGE will ever be worth the hassle it would take to implement it at DLR.
As for the either NGE or attraction debate...
We'll never know for sure.
We do know that there were several large projects and refurbs that were killed in the last five years or so.
Was it because the money was going to NGE?
That would be disappointing and rather disturbing.
Or was it just because they were getting out of the attractions race in favor of new things, like "enhancing" the guest experience with NGE-related things?
Money decision or a business strategy shift?
Either way NGE happens at the "expense" of the traditional Disney way of attracting, wowing, and keeping guests.
Hence...I don't like it. Nothing about it is worth not getting the additions/refurbs that it cost us, whether it was a purely money thing or a strategy thing.