Don't bet on it. While HG claims broader Macross rights, with Mospeada they still seem to be playing by the old rules. Everything that came after they signed the inital agreement with Tatsunoko, most notably Love Live Alive, isn't fair game.
Same reason HG's VF-4-X looks like the early Macross Perfect Memory version and not the later ones.
That doesn't preclude them talking to the artist and getting the rights though...
Cyc