Just because they made a heart sign while fighting does not mean Alto wants a loli in his harem.
And Alto doesn't have the charisma to attract giant women. Rock stars like Basara do.
(2 out of 7 of the Jenius children. If mama Millia only knew she'd set up one of her older daughters. )
That said this is becoming a Mech and Tech thread.
Interstingly the age of 17 is the age of majority in Frontier. As Ozma is advising Ranka who is 16.
Also in Macross 7 mama Millia with her bugging of Mylene and later Basara indicate that there is trend of young people marrying early.