The doors are annoying, yes. But only because they are too slow at Phantom. Once you got the hang out of it (short break) they are nice places to drop bombs behind
Temtesh bay in general: Track 1 is a pure speed sesation, track 2 is wonderful once you know all the possibilities you get through the splitted tunnels and track 3 is fun to race as well with its huge heights and lows and sharp turns.

And the sourrounding is awesome. Rusty and technical