I think this is an intriguing idea that deserves more development. I feel that its weaknesses can be boiled down to "not enough content." I can tell there is a very clear vision in mind and there are stories galore in the creator's mind. but I need to see more of that vision before I can really use it in my games.
The overall concept of a planet-sized Kaiju and harvesting the stomach acid which serves as fuel is inspired! I'd love to see what the colony spike looks like, or how large it is, a rough silhouette, something that I can anchor my game to and really feel the setting.
I suggest approaching the first paragraph again. Distill the details into their most juicy, descriptive components that clearly explain what I'm looking at. For instance, "a lush mono-climate of prehistoric megafauna" doesn't tell me that this is a planet-sized kaiju capable of providing a stable atmosphere while it travels through space, and seems to have been mistaken for an actual planet by the corporation, who stabbed a giant colony structure into this creature. I was able to piece this together by reading the rest of the module, but I think that can land much more quickly and inspiringly if it's rewritten.
The visual design of is delightful, and it makes me want to read it, but it took me a while to understand the setting.
Last thought, I want the setting to have some NEEDS. Will Alonsus Blake hire the crew to sabotage the acid harvesting operation? Has Bakari Malik heard threats from other druids that have become overly zealous? If shit starts to hit the fan, is Carter Jones more likely to go down with the ship or panic and escape as quickly as possible, stranding everyone?
Again, very intrigued by the setting, but I think there needs to be MOAR to really incorporate it.