No, this is perfect. One thing you could do; there's a vector displacement shader somewhere to warp the road, and there's likely (I'm visualazing the network now, so I'm not sure) an open input in that shader (left side). If you add a copy of that vector displacement shader there with smaller displacement (say 1m) and and a small scale power fractal to its function input, you can warp the tracks a little bit extra, so they are not so straight. Sizes for the PF should be around 1/5/0.1 or so, and you can change the white to grey for less impact or decrease the color roughness if it's too wild.
