I honestly don't see why Macross "needs" to continue. If Kawamori gives us one final bang-up movie, OVA, or series to wrap things up, I'd be quite happy. I don't see it as a franchise that needs to continue infinitum, and most certainly not one that needs to be ruined by "new blood."
If you want that, there's Gundam, and as much as I like Gundam, I don't want it in my Macross.