Here is why I don't believe this film gets greenlit. When push comes to shove, this is material that can not be done in live action for cheap. This is a sci-fi story that would be set in the future and you have to execute the SDF-1, the Veritechs, and the Zentraedi all in one movie.
The Veritechs are transforming fighter jets. There is a whole fleet of them on the SDF-1. The SDF-1 is not just a helicarrier from Avengers, it is a Helicarrier that transformers into one giant robot. So you not only have a fleet of Transformer-like fighter jets, one giant helicarrier that turns into a giant robot, you have a race of alien humanoids that are in fact giant humanoids. That is not something that can be done for cheap in live action. To try and do it and make it look good, there is no way it can be done for less than $200 million. Look at Pacific Rim.
Robotech is an existing property, but it has not had the longevity of a Transformers or a TMNT. It has not had consistent and successful reboots over the last 30 years like those franchises have had, not to mention huge toy sales. There have been Robotech toys in recent years, but most of them are higher-end, premium and collectible type toys, as in toys for older, nostalgic collector market fans and not for kids.
In the end, when the the suits are in their offices and deciding on what to and what not to greenlight for their upcoming slate, I just do not see them committing $200 million plus possibly even millions more for a franchise like Robotech.
Just think about this. Warner Bros. acquired the film rights to Robotech and had them for EIGHT YEARS. That means for eight years Warner Bros. was willing to spend millions to develop this property but they were never confident enough to pull the trigger and greenlight the film. That included having the likes of Batman Begins/Dark Knight producer Chuck Roven and screenwriter Lawrence Kasdan on board.
Even now, look at Masters of the Universe. Warner Bros. had the property for many years, never got off the ground. It switched to Sony, and it's still languishing in development purgatory. I know I've read a little movement on the project, but it's been like several years since the Sony switch, and Sony is still not sure on giving it the greenlight.