ADV will release the uncut, subtitled-only Southern Cross and Mospeada sometime in the future, according to a recent press release. So just sit a little longer and wait for the DVDs.
I vaguely remember the third part, which I never gave much of a chance, and I remember the second part. I watched the second part again recently (the dub Robotech script) and found the first few episodes rather lukewarm, with later episodes gathering in excitement. I think I enjoyed this part more when I was a child, though. It does have a...memorable ending.