The belief that Ranka was created before Sheryl is not true. Sheryl's character was created before Ranka's.
Similarly the belief that the love triangle was originally planned to be Ranka being fought over by Brera and Alto is also not true. While the original love triangle was two guys and one girl this was still in the planning stages before they decided on the characters.
Kawamori never once gave the Shrug of God in regards to any of the characters or their relationships to one another. Those were a part of the fake interviews.
Kawamori never said the ending was a Marry Them All ending. Kawamori never even implied that, in fact he jossed many of the dialogues that could have been taken as meaning that Alto loved both girls.
The claim that Kawamori had very little to do with the last episode of the TV series is unsupported. In his fanbook interview, script writer Hiroyuki Yoshino observed that everyone involved in planning the last few episodes had started feeling the same way: that it didn't need to end with Alto choosing one girl or the other. In fact, some of them even started to joke that, 'if Alto were to behave naturally, he'd like the sky more than either girl anyway'.
Furthermore, unlike commonly believed, Yoshino did not specify out right who Alto favoured either (although this may have changed since the second film was released).
Note that, according to Kawamori in his Wings of Farewell Complete Book interview, the ending of the films was the one closest to the ending he had originally thought up. However, he has not specified exactly how close it is to that 'original' ending.
Even though the movies are supposedly Non Serial Movies Kawamori does endorse the movies, especially the second one which resolves the love triangle as the end of Macross Frontier.
Yuichi Nakamura, who voices Alto, is also the voice of Tomoya from CLANNAD and Graham from Gundam00, and there's some places where you half expect Alto to sprout blond hair.
Alto really did feel like Tomoya in a mecha setting, specially since one of his love interests shared some similarities with Tomoya's main love interest in Clannad (Both adorably shy, and end up coming out of their shell almost entirely thanks to Tomoya/Alto; both are trying to get onto a stage; both have trouble remembering the past...).
Also, as this show ran between seasons of Gundam 00, fans of that show also noticed how visually Alto resembled Graham's best bud and mecha designer, Billy Katagiri. There was fanart that depicted Billy and Graham doing a fusion dance, and thus becoming Alto.
Sheryl's Seiyu Aya Endo voiced Miyuki in Lucky Star and Kinue in Gundam00. Not quite as recognizable due to the range of roles (and talent of the actress) but there are moments of similarity between Kinue and Sheryl.
Naturally, during the release of figures where the Lucky Star cast cosplayed as Macross Frontier cast, Miyuki ended up becoming Sheryl.
Some of her Lucky Star castmates also appear in minor roles Fukahara Kaori and Aya Hirano play two of the three bridge bunnes and Hirano also does double duty as Pixie Squadron pilot Nene Rora (aka the pink haired one).
You guys missed Kikuko Inoue as Grace? the "Goddess" of all Voice Actresses. (For those who don't get the pun, Belldandy-Ah My Goddess) Though as of how things goes on for her, she's more like I-No reborn
Katsuyuki Konishi, who voices Ozma Lee here, has voiced several prominent robot-show roles, including Kamina and Volfogg. The latter is particularly notable in context of Mac F as a few times when Ozma has had to sound formal, he ends up sounding almost exactly like Volfogg.
Jun Fukuyama voices Luca who is nearly a shota-type character....he hasn't played one in a long time.
When Leon Mishima starts getting into his rousing speech: hey, isn't that Kyon?
No Export for You: Despite how incredible the show ended up being, so far it looks like the show will fall victim to the infamous legal snarls surrounding the Macross franchise; nobody has said a word about even considering bringing it over, even with the show DVDs, soundtracks, and related paraphernalia matching or even shattering decade-old sales records in Japan. There's still a chance that intense industry-wide pressure from everyone else (looking to strengthen the overall market with another prominent release) will make the various combatants in the Macross legal snarl play nice (or, perhaps Harmony Gold will be inattentive as it was for Macross Plus) but as time grinds on this begins to look less and less likely.