Re the validitiy of a site being less of an issue - I'd strongly disagree. Fact is, there's some real old lists on the MT site that should have been removed long ago. It surprises me that they werent't, to be honest. Case in point - before I tore the MSP page apart and reassembled it, it was so inaccurate as to be almost useless. I guess it's a case of someone stepping up to the plate and getting things like this done. They only have so many folks to do the work.
Another case in point is the recent list of Dept of Homeland Security freqs that appeared in a recent MT. If you cross check each of the outputs, you will find that most of them are reassignments from other services, and a couple - not too many, but a couple - came from the old USCG LE pool.
Re the new nationwide freqs; yeah, I haven't heard much on them either. I don't think we have an Air Station nearby, so I would expect that the only time we'd hear something is if some major disaster that involved the CG in rescue ops needed air support - but I'm hopefully wrong about that.
73s Mike