Mark,
Not sure what state your in but, I'm in SC and I've been communicating with the RTN network manager about doing this. Thus far, to my understanding, the hangup is that SC doesnt have a secure FTP site. I don't know what all that intels but, they are looking into it. Adam is also working with me to see if this can happen. In my particular area when I DPOS a project some of the NGS base stations are pushing 50 miles and some are over 70 miles and are coming from 3 states. Sadly, many of the jobs I'm doing are less than 10 miles from the state stations.
Currently our State network collects 4 Constellations, but only sends GPS & Glonas to NGS. Our points can be post processed using 4 Constellations through the State site, but much more cumbersome than using DPOS.