I suppose if you really want to release the associated design merchandise under BW, you could try it under a flashback banner or something like that.
But I thk thats splitting hairs with HG, and my take is that BW and kawamori-san want to move on with macross sequels more, than to try and take down the old RT/HG fort. I would think macross sequels/delta makes BW more $ and has more potential $ than the originals.