With that tinker toy pulling all the Nomads in, that "spot" had a small anomaly happening there and in time when it gets more stable, it turns out to be a passageway to an uncharted sector, not a single system or something but a whole new map where seriously devastating battles between the humans and DonkeyWash guys already going on, Nomads being the serving "hands" of the DonkeyWash dudes.
The houses were mid-eastern / african / south american themed there and the battles were fierce, almost losing, most dying, half of the planets are in ruins and such and by chance, one of the Order recon squad to the initial "event point" manages to jump there with a calculation error over his nav comp auto pilot.
Then humans discover that they are about to get destroyed since that force will come to the other side for sure.
etc etc.
This was a summary not the whole thing I had in mind but a general outline.
Oh and at the end, instead of having a "tinker attack bla bla win situation" I thought of a massive Donkey attack and humans defending their last post with all they have while civilians were trying to flee to other parts of the galaxy.