I disagree. I would say a majority of the fan base in NA who wanted to see Macross Zero has seen it already. Its been discussed here enough, and generally, outside of the mecha sequences (which everyone loves), it wasn't blowing anyone skirts up. No one hated it, but its not exactly something anyone is still excited about or really still talks about. Completest Macross fans would purchase it to go in the collection, but it certainly wasn't as new and exciting (and really, out of nowhere for most of us) like Macross Plus was back in the mid 90's.
A proper release of DYRL? would stir the masses up, but I don't see 7 or Zero having that draw here.