The die-hard anime fans out there that are either objecting or hesitant about purchasing these feature compilations need to understand that it was the original Japanese studio Toei themselves who had all these TV anime dubbed and compiled into features in the first place. Many of these shows had filler episodes and I believe this feature format is actually the best way to attract these old shows overseas, as you get the real essential elements of each series, while remaining faithful to the essence of the original Japanese series, so they are not sanitized or Americanized in any real way at all. Toei themselves planned out how each series was to be edited for the features. So for all the die-hard anime fans out there, this is really as good as you're going to get. The voice acting in the dubs aren't perfect, but at least, because its Toei themselves putting these out internationally and not a local licensor, you know the scripts never really stray from the original Japanese ones.
As for those who grew up with Starzinger as Spaceketeers on Force Five, I think all the Force Five series have had their rights reverted back to Toei. I dont believe the company that makes them even exists anymore. There's no way they will ever be released officially on DVD. Besides, each of the Force Five series only had 26 episodes produced among them, so they are incomplete with no conclusion, which these features will have. Besides, Toei themselves feel these international feature compilations are superior to the original Force Five dubs.
I would advise all the die-hard purist anime fans out there to read this interview with the person in charge of the company that did all these dubbed feature compilations for Toei. I think he makes an excellent case for the rationale of why Toei went with this approach. It's on the website Sci-Fi Japan and titled "Classic Anime Gets Star Treatment!"
Besides, the original target age of Starzinger and most of the other series Toei are putting out these international dub feature compilations when they first aired on TV in Japan were children. I think this format will be a better way of attracting a few new younger fans outside the anime die-hards, without them being given it in a way that's sanitized or overly Americanized.