Earth also seems to be an intergalactic Bermuda Triangle with all the Xenotech showing up. I still suspect Sheol is either plagiarising or playing around with Black Box xenotech
Sheol might have come up with it himself. but given the artiface and the Kausen in general. its also very possible that Sheol is using alien tech.
...in a more serious note, it feels like there's a faction that drives other scientists to the deep end within the Union for obvious nefarious means. General (I forgot her name...) did mention that Professor Max and her Crystal (the Regent) wasn't paid much attention to until they were gone out of whatever group's sight.
her name and rank is Brigadier General Peters, If I remember correctly.
Keep in mind that this is both good and bad for a lot of very good reasons.
Whatever it was that caused the Kausen to first crash land on Earth is still unknown and might actually also be the same thing that got the artifact that was actaully a super advanced AI that turned Jessica into a Magical Girl. But I'm not counting on that since it's also very possible that that is not connected, in which case how and when did he crash land on earth. but I digress. The Kauses inquisitor that is searching for Galbinus and his team while also looking for tyrannous and his group of merry villains seems like he will be more obstructionist than he probably should be given the situation until he learns the whole truth.
Devin will be talking to him as the Union Representative since he is the leader of the Union's premier Super Robot Program as well as main contact with Galbinus and his crew, while Peters or someone else will part of the talking when it comes to things not having to do with Tyrannous or Galbinus. Mostly the consequences for everyone since again as has been pointed out before, both the Free Brothers and the Enclave shouldn't have been on Earth in the first place since Humanity was until then an uncontacted race that had yet to even put a colony on its moon.
As for being in a dead-end region, probably not. Space is vast and for all anyone knows; the Sol system is on the edge of known space for the local superpower, or it might be in the deep frontiers with other races either not being around or are in the same situation of not having true space travel between systems or have not yet left their planets. A true dead-end region would have Humanity evolving in a sparce region of space with little to nothing interesting in it that can't be found elsewhere, and Humanity would be unique as it evolves in an area with little to know sapient life.
With contact with Makean about to happen, this means both that Humanity will get reinforcements from a super power to help with the Free Brothers and maybe one or both of the other two villain factions but I am not counting on that since it's purely a human problem so in all probability, That will be dealt with by Human forces with little to no Kausen help outside of certain circumstances.