The reason normal weapons work so poorly on Protodevilin
- They're energy vampires. They probably absorb heat and kinetic energy as well, just not as well as life energy.
Sivil is just a child among Protodevilin.
- Gigile isn't interested in her romantically, but because he's her father.
Macross 7 is Kawamori's Springtime for Hitler attempt.
- He seemed really keen on moving on from Macross after the original series and Do You Remember Love?, even going so far as to declare the story of Hikaru, Misa and Minmay completely over. He didn't even show up for the 10th anniversary production, Macross II: Lovers Again. I'm wondering if Big West handed him a wheelbarrow of money and said —"Here's a budget. Sky's the limit, so long as you produce another Macross series for us." Kawamori, having just finished Macross Plus and wanting to get back on with other projects (such as Escaflowne, Arjuna, and Aquarion) probably tried to give them the most ridiculous, cliche-ridden, Mary-Sue-saddled series he could make to get them off his back and finally kill the franchise in its tracks. And then it became a hit in Japan.
- Helping this theory is that he had next to no involvement in 7 Dynamite, only contributing to the mechanical designs, as well as the fact that the next Macross project he was seriously involved in, Zero, took place before the original Macross, and was released over the course of 2 years.