I haven't seen the land in person to gauge the feeling of it....But I will say that the rock work appears to be mostly on the peripherals of the land...Is that true?
The outlines, yes. But the rockwork is visible on the pathways as well, especially near the Falcon.
I thought the falcon ride was originally going to have multiple missions like Star Tours...what happened to that idea?
Also...still possible a new mission could be announced close to the opening of RotR?
It's very possible.
It was never supposed to have more than the one it opened with, although it's expected that, like with Star Tours, new missions will be added as time goes by.
I think that the random navigation of the attraction was supposed to be started on the outset, but the difficult playtesting nixed it combined with the NVIDA system and getting that to function easily. Once people have a "handle" on the attraction more, I foresee new missions ASAP.
And yeah, Smuggler's Run may be just fine, but it is nowhere near a terrible attraction.