About Drops.
They are mentioned several times, but we encounter the rule only at page 15, under GM Turn. I suggest to turn that part into a specific paragraph with its title (Drops, or something like that...).
Also, about the usage, and the meaning in fiction, let me ask if I'm getting them right. Let's say I defeat a couple of enemies (side note: defeat isn't a coded word, in the book, I suppose you could stay with Taken Out), both at Far distance. Then, it's GM turn: he activate his mecha, then at the end of his phase he rolls for the Drops. Are those Drops something not entirely rooted in fiction? Are those more meta-gamey? I mean, those Drops aren't located in the hex where I defeated the enemies, nor the Aces need to retrieve them, correct? Are they simply a sort of videogame bonus directly applied to the Aces that want them?
If this is the way, then you could add a little bit of details about their nature, and/or put an optional rule that root them more in fiction, ie. the Drops are described as real useful stuff really... dropping... on the battlefield by the wasted enemies, and the Aces at least need to move to that hex to retrieve/use them. Useful? Or maybe not in the spirit with the simple, low book-keeping, nature of the game? However, more info about them should be useful, imho.
PS: about the Ace Turn and GM Turn. I suggest to call them Aces Turn, and GM Turn. Also, while English isn't my mother language, I think that, at the start of GM Turn paragraph, page 15, this phrase could be explained better, or put it down in a different way: "After each Ace has taken their turn, the GM has one enemy Activation per Ace."
From what I understand, all the Aces does their turn (so, Aces Turn), then GM does. I'd put it as: "After that all the Aces has taken their turn, the GM has one enemy Activation per Ace." In the original description, I could take that "each" as: 1st Ace Turn, GM Turn, 2nd Ace Turn, GM Turn, 3rd Ace Turn, GM Turn etc. Am I the only one having that doubt, reading that phrase?