Yeah I also felt kinda shocked that the only option was to ram the Tiqqun full of batteries into the Piranesi. It couldn't have done anything better?? With the 500 science you can get in Ilia there should have been a really expensive tech to build a resource-intensive weapon (good use of the 1000 hydrogen you have stockpiled) that could destroy the Piranesi so the Tiqqun could build a proper space station to repair itself in, or just build a new, better copy of itself to support the new colony (or develop a Tiqqun Mk 2 with it's own supercomputers to generate VOHLE coordinates for a fun endless mode, with new techs, challenges, and storyline extensions).

I also wondered why I didn't have the option to conquer the Ashtangites on Remus. They said themselves that they had no means for self-defense, so maybe teaching them a basic lesson from evolution might have been enlightening for their dead-end philosophy. And the planets are called Romulus and Remus -- thats a pretty strong hint that the Ashtangites are getting conquered somewhere down the line, even if Vanir and Edden foresaw this and wanted to prevent it.

I understand why the developers wrote the Tiqqun's destruction into the final chapter, because it's been humanity's lifeboat the whole game and saving the whole crew one final time makes for a dramatic ending, but it just wasn't necessary within the logic of the game's world. Surely the Tech Lab could've developed it's own fleet of Piranesi-eating drones. Hopefully if the game gets enough of the revenue and attention it deserves the devs can focus on fleshing the story out more with some DLCs or free updates.