Independent question: any chance Starfinder will try to address rules for sizes above colossal? Once we're dealing with starships and, theoretially, creatures the size of asteroids, it would be cool to have them actually be different at a fundamental level - kind of like swarms, where they're too small to be harmed by weapons - perhaps creatures above colossal are too large to be harmed by weapons more than 4 size categories smaller. There was a 3.5 book back in the day that had some above colossal rules, ah, Immortals Handbook - Epic Bestiary.
I seem to recall a mention of an attempt as part of the mythic rules (maybe it was along with kaiju), but with the design team deciding it was too large a task to sneak in. That's based on hazy recollection of old board posts, of course, the reality is probably different.
In any event, it's been a hole since kaiju were introduced; be cool to have it filled.