The sad thing is (as a lot of the comments on that story indicate) HG seems to exist solely to make some money through lawsuits. They clearly care absolutely nothing for the actual IP, they purchased their rights as an investment decision many years ago and this is how that investment pays off. Also, I hate them.
What does this mean for us? Let's be realistic here, nothing. Nothing at all except the satisfaction that will come from potentially seeing HG get the smack-down. I think Herb and the the rest of tptb have made it clear that they want nothing to do with properties that weren't produced in-house. And I think they certainly aren't willing to invest money into going back to court, only to retrieve rights to a dozen images that the timeline has moved far beyond anyway. And I wouldn't want them to tbh, what a waste of money for a small company that needs to maximize cash-flow.
As for unseen mechs, thanks to Robotech Tactics we now have a source for those some of those miniatures if you want them. And yes, I realize Paladium is paying HG.