Couple facts on the creation of the first Robotech RPG. When Palladium first got the license, Harmony Gold supplied them with the research material, plus some they scrounged on their own. Unfortunately, much of the japanese anime research material wasn't as thorough then as it is now. All the sources, for example, on the original valkyrie listed the standard number of missiles as "many."
In addition to that, they did have problems getting fine details out of harmony gold. One famous conversation between Kevin Siembieda and Carl Macek involved them going over the sensor systems for the veritech. Macek told Siembieda that he thought "nightvision" was a bit too advanced and science fiction-y for robotech. Yeah, nightvision.
There's a different batch of writers there now, freelancers. They're delving deeper than the original books in accuracy. Many of them are diehard Macross fans. As in distinct and different from Robotech. Though they are robotech fans as well. Of course the new stuff will be shadow chronicles if they get the license (and from what I've heard it's a virtual done deal). Harmony Gold allegedly fielded it to other companies, but were never as satisfied as they were with Palladium, which says either good things about Palladium or really bad things about the other companies that tried to pick it up, or maybe both.