It both would work and wouldn't.
City pop has been being rediscovered since mid 10's and that retro sound, along with related styles, like future funk, is very liked and appreciated now. Go check Plastic Love views on Youtube. City pop would be great in a new Macross show from the music nerd point of view.
On the other hand, Macross is all about Japanese style idols and nowadays they are always associated with a certain kind of music (think Frontier and Delta songs) and changing this to something different wouldn't fly with Japanese fans. I doubt whoever makes a new Macross show is ready to do something new and risky. Last time they did that was Macross Plus. Does Plus have nice music? Hell yes! Is it popular? Nope, it's all but forgotten.
Japanese vote Oboete Imasu ka as the best Macross song part because it's good, part because it's iconic, part because nostalgia. Give them another similar song and they would say "Huh, it's good" but then forget about it.