It's definitely more realistic already but there's also room for improvement. Still, very good how you went further towards an out&back style layout.
A few key things
- the turn your coaster has at the top, combined with the flat part of lift his, is very specific to wooden rollercoasters when it comes to these tall out&back style layouts. For steel hypers there is usually a pre drop right at the end of the lift hill or in the case of the newest generation of B&M hypers they just have the drop as soon as you hit the top of the lift hill.
http://i268.photobucket.com/albums/jj20/markhudson17/Diamondback Testing/DSCF0047.jpg
- you generally need to smoothen the banking and the hills a lot! Right now your hills feel like this _/\_/\_ when they shouldn't have such a linear slope but should be a lot more organic instead.
http://f.tqn.com/y/themeparks/1/S/j/5/1/intimidator-roller-coaster-airtime.jpg
Hyper coasters usually ease into the hill and out of the hill and don't keep going up at exactly one straight angle and then down again at exactly one straight angle.
The banking also needs a lot more effort. In PC there's the option to smoothen multiple pieces of track at once which does exactly what it says and is a really useful tool. Also for the turnaround of your layout for example the banking is at the wrong angle at first. Check out real life onride videos of for example Silver Star at Europa Park and check out how the turnaround banks there. Then compare it with your video. It's very much possible to get the desired result in Planet Coaster!!
- I don't think a coasters is done until it's themed accordingly. Now you may follow the route of most american parks where there's little themeing other than foliage perhaps. Or the way many Central European parks like Phantasialand or Europa Park do it the rides have heavy interaction with the themeing, with architecture, with landscaping, with foliage, etc...
I'd say learn more about layouts first. As soon as you're more familiar with realistic layouts try to think about how you can incorporate themeing while you're designing the layout.
- Your coaster also almost is too tall for the height of the hills it goes through after. Until your mid course break section the pacing seems way too fast. The g forces would probably seriously injure people in real life. So try to choose the height of the coaster in a way that it works for the whole layout
Things that I see in place now that are definitely an improvement already are:
- the mid course break section being present (although it seems a bit too abrupt and short actually...that way it doesn't actually get enough grip on the coaster here...but maybe I'm wrong...generally it should have the length of the train)
- the general out&back layout is a huge improvement!
- I really like the idea of your turnaround! Just make it smoother and bigger so it doesn't break people's spines with those g forces.
Keep up the improvement, I'm interested to see more.
