You made the video Dexter!!! Great job with the interchange btw, rated up the asset and the video. But bad and good news for you: actually I made this interchange a long time ago and I called it Yin Yang Interchange based on this post. My interchange is a combination between the "new" (the one you've made) and the "old" design you can see in the post. But compared to your interchange ... mine is shit ... but I love this YouTube video showcasing the interchage (this is my ego speaking). Two things:
1- When you build a roundabout (the trumpets or loops): what I do first is build the "radius" segments (8 in total, at 45º) with, of course, the same lenght (6units=48mts , etc). And last, I build the circle using the free form tool, snapping at 90º. This way all the diameters will measure the same lenght in units and in meters. With the way you build the circles, the lenght of the diameters has not the same lenght in all directions. That's the reason I never use the curve tool to build roundabouts or circles or whatever you want to call it. And the difference becomes more noticeable when using larger diameters (not in your case because the trumpets are not too big).
2- Try to use NCS music or something because I think I listened to Avril Lavigne ? I can watch the video, yet, but I think in Germany you can't because of your copyright laws, called GEMA ? (really annoying with YouTube)
3- If you want to post the video on Reddit be aware that is full of stupid and ignorant people ... and kids in kindergarten, but with a few good and educated people like Judazzz or SamsamTS or Scotland Tom, to name a few. If you want to be a part of an amazing group on Facebook called SkylinesNation - A Cities: Skylines Guild, go ahead (MrMiyagi, tony_r_68 (Zed68), Quad Rioters and many others are members)
Have a great day, and watch The Walking Dead Season 7 !!!