This is a really good proof of concept. I would use this.
Something about the moment of the turn itself isn’t working for me though. Just before the turn you have essentially no information about the route ahead, until after the turn is completed. This would make a sequence of consecutive turns difficult to navigate.
This is also a problem with Google Maps navigation. It is always showing the perspective looking straight ahead of your current direction, even when you're approaching a sharp turn. Instead, the perspective should be along a vector connecting your current location with the point where the navigation's path crosses the edge of the display, pointing straight up.
This is exactly why on traditional gps maps I prefer it to be very very zoomed out. It's far too common that mapping tools make something like a sudden second turn invisible to you until it is too late to switch lanes.