Hey, guy -
Yeah, it's low res because I was hoping to use the same model in real-time. I don't know what you'd be able to do other than increase the poly density of the dome. Like I said, that'll reduce the size of the sawtooths, but it won't eliminate them. A TG2 sphere polys are probably small enough (do they consist of polys or are they built procedurally?) so it'd not be noticable, though - that's not a bad idea for a workaround for the time being.