Your bit load graph would be interesting too.
Oh, yes. That, too, would be interesting.
Actually the SNR v sub-carrier plot gives quite a good idea of the "excess" SNR that is available across that 200 kHz band. By eye, we can judge where a flattened sinusoid that links the two frequencies would lie. Everything above that would be the bonus "excess" due to the lack of other users. Whether the "excess" could then be mapped across the entire bandwidth, to give an estimate for a "one user system", I'm not too sure.