First, Macross wasn't aping Gundam's "realism," as Macross is further down the Real Robot side of Mecha anime than Gundam is. Macross took more from Space Battleship Yamato and Kawamori poached Itano from Ideon. Also, Kawamori hated the Idol culture of the time that treated them as nothing but commodities to be used up and disposed of. That's why Idols never die in Macross. That's pretty much the extent of the Social Commentary of Macross. Culture is good, there's something of value in music, idols deserve better than to be treated as objects, and Pop Music makes a hell of a psychological weapon, if it's followed up by All The Thermonuclear Missiles. That's the real reason the Zentran were after the SDF-1, they couldn't make "Reaction" weapons any more. So the SDF-1 gave them Reaction weapons. In large quantities.
This is entirely incorrect. Macross 7 has three characters from the first show, Macross Zero has a character from the original, Frontier is fucking loaded with things from previous series including the Grand-daughter of a character from Zero and a girl whose mother worked for the same character from Zero. The movies even have Isamu from Plus if you're listening closely. Delta has one of Max and Milia's grand kids as a central character and alludes to what might be Minmei or Misa still pulling strings. Macross was never like Gundam, nor was it trying to be, except that they're both Mecha series and Kawamori's designed Gundams before.
The west lovers OG Macross and Plus because it's all they've gotten.
NHK did a poll back in 2019, if they're going to bring any series over, it'll be Frontier, followed by a proper DYRL release, and maybe even a proper Macross 7 release, because those are the three most popular. Give the Western fans a proper blue-ray release of the first two and they'll sell like crazy. If it was reasonable, I'd even by a Macross 7 set. Fucking Flower Girl at 30th most popular character too.