The monster is a one time thing. If anything they upsized everything else. Remember the 1/100 VF-0, the 1/72 19 everyone was waiting for. They'll probably go 1/32 with the VF-1s once they milk the 1/60s again...
I dont really see the point of a smaller Macross. It should overtower the other toys Yamato has. Maybe they'll make a smaller one down the road.
Besides, my source that told me NOT to commision a custom said that Yamato was pretty excited about this toy, that it's coming for sure.