The best way to revive Southern Cross if anyone really wanted to, is buy the rights to the story and basic ideas. Mecha and characters. And then go through some serious redesigns, revamp the story and how its told. Much like a government issued program, if its not working dump it, same thing with S.C., what ever really truly made the series that bad for viewers, delete it and rewrite new and impressive filler. (For example the notion that the 3 mounds in the wilderness are remains of the SDF-1, 86 that one!!)
But again, someone would really want to have invest $$$$ in this series. Even in 1985 when I was 9 y/o I thought that S.C. was so-so and that it could have been better.