So, the potential is amazing for this track. The transition areas could bear to be a bit smoother, especially for the sake of low-riding cars, and the 130R-to-Mirabeau Haute section, coming into the Monaco hairpin, really needs much better warning coming into Mirabeau. It's a very jarring slam-shift right turn.
Down the line, I would advocate for, perhaps, consistent scenery and track textures, and addition of a couple sections like the Karussell (replacing the Brooklands/Luffield section), the Mulsanne Straight (with chicanes, leading through the Mulsanne Kink, into Parabolica), and the Luyendijk banked turn from Zandvoort (that fast, banked right-hander, last turn on that track) somewhere between the Catalunya bit and the Corkscrew, and lastly, l'Epingle, the hairpin from Montreal, perhaps replacing La Source or some other hairpin on-track.