Shuttle coasters byte in real life as well as in the editor; so get don't even come to the defense of them. They are boring and kill riders waiting in the queue since there is only one train and takes forever to load and unload.
If you don't like shuttles, then don't like them. The team only wanted to expand the options, besides, all other sims tdo have shuttle modes.
About the training, People make their choice wheather they want to learn it or not. The have plenty of rescources to go to, more than just the tutorials.
Oh yeah, guys, look inside the trains. They seem to have alot of unecessary detail inside that you can't even see. Just look inside one of those trains. I think they should've also made sure that every visible face is texturered for realism, and reflections would be nice too. I think they spent too much detail on adding alot of polys inside that you can't even see generally.