Yamato doesn't need ideas, Big West and Kawamori are the ones in charge of the ideas. Yamato just needs to license them. But as far as what Yamato does have licensed, they still have Regults, Glaugs, Nousjadel-Ger, etc to milk.
And seriously Robotech and Macross isn't the same. WB wouldn't have to get a seperate agreement with Big West if they were to make a true Macross movie. The mods don't want to keep locking your threads, so research the site a little bit so you can be more comfortable posting, instead of making an apology all the time. I know some of us have left links for you in the lock threads so make an effort.