Well, I have to say this is one of the most creative shuttle coasters I've ever seen, and definitely worth finishing. Like you said, some of the transitions are a bit quick, but the only ones that I think are really a problem is one straight after the booster lim section, and the one after that. It's probably because of the increased speed, but they pull around 0.8g lateral, which is a bit much for a transition. Also, I thought the speed over the loop on the return journey was far too slow, maybe decrease the deceleration setting on the second set of lims. There are several e-top problems, but I'm not sure there's anything you can do about that. This is just an idea of mine, but imo a holding brake on the vertical spike would really add to the ride, you know, just to build up the suspense before the drop.
A very inventive ride here, and like I said I?????????d really love to see this finished off.