Well in Macross F they use the traditional Macross SDF-1 and plus Story style for example, love triangle between the main character, a Hikaru type a Max type and Kakizaki type (Alto, Micheal, Luca). However it seems that Macross Frontier makes a direct connection to Macross Zero, in episode 8 they mention the "bird people" and show footage from the ruins in Zero, Sheryl is part of the nome family, Probably Mao Nome. Maybe in macross frontier we will know what the hell happen to Shinn and Sarah...(I still want basara to make an epic come back have a duet with Sheryl)