I also use sport tracks with forerunner, I haven't had G training center even installed for ages. But I don't do O with it any more, I use a cheap logger and gpsbabel command line tool to read data right from the unit to a gpx file (I just double click a bat and it wirelessly connects to the BT gps and writes each run as gpx file named by date&time of each run).
I am well aware of all those missing features and badly working ones, there is lots of them. Like those gps calibration issues, missing support for tcx format (I did it for Garmin hst, but soon they changed the format again to tcx and I lost intrest...), dot animation should be written again with option for mass start at every control an from at any point. There is things to fix in manager part too, like
relay support (have you ever seen well set up SI relay in RG?). And new live tracking feature is only half finished, cell phone viewer client crash if there is a dot with scandinavian letters (I can't even use my own name there) and so on.