Pete, your point about Dumbo and The Teacups, etc is a good one, however, the thing about Soarin' is that it can't even be compared to a carny ride and that's why it deserves more. As it is, its solid "D" ticket, but it could have been a premiere "E".
No, not every single ride has to have a complete, detailed story all around it. But some of them do, and if Soarin' doesn't rate that level, what does?
Test Track is a fun ride with a sort-of story around it. Certainly more of a story than Soarin'. And sure, fun rides are going to be popular. Especially when you put one in a park that had been neglected for years.
But again, think of the opportunity cost here. An automotive proving ground? Do you REALLY think that was the best Imagineering could come up with for that ride mech?
So I'm saying that perhaps Soarin' isn't a dark ride but it still can be a great attraction. Now, is the idea permeating here that Disney must come up with another dark ride per se or have great attractions become the norm?
Yes, it could be a great attraction, and would be with a better story around it.
I'm not 100% sure what you are asking after that, but I'll say that certainly an attraction can be great and not be a "dark ride".
I don't count Indy as a dark ride, though. To me, dark ride implies a non-exclusive indoor ride-through attraction. Indy doesn't make that definition, though certainly it is a great attraction.
To me, though, the issue is that Disney seems to have it in their heads that dark rides (as defined above) are just to give the kiddies something else to do, and there's not much point in putting more effort into them.
I'm not saying that they MUST add more dark rides, but I do think they probably should. But they should do so with an eye toward innovation.