Actually for me, I've gotten all the starting and first destination sequences pretty evenly and I've ridden about 25 times. The one thing for me is that for the ending I mostly get Geonosis with an occasion trip to Naboo but in the 20+ times I've ridden I've never gotten Corusant. Put simply, the computer is programmed to randomly select sequences and not pick one more than the others.
"Hello folks, welcome aboard the Disneyland Railroad..."
"The Gods have been angered by all the celebratin'..."
I like Hoth a lot and love it.. Dont like Tatooine. Have only been to Kashyyyk once. I get the Darth Vader beginning almost every time, my last ride was the first time I got something else. I was ending in Naboo ever time for a while, but have gotten Death Star and Coruscant the last few times.