Other than Order...

[Treewyrm]

Regarding intelligence agencies I'm afraid you're incorrect as you do not consider the situation each of those houses are in right now. Bretonia is largely occupied with the war against Kusari, with the situation in Leeds it does looks grim. Not to mention they're on the opposite side of Sirius, far from Nomad worlds than anyone else. For research purposes they have abandoned city in Newcastle. Kusari on the other hand have Aoi Isenjin to deal with, just as Rheinland has Das Wilde. This pretty much leaves only Liberty, but they don't go far into Nomad systems (except Alaska of course) either because between them there is the Order, besides now they're in a conflict with Rheinland. Spreading resources thin in times when you need them the most is a bad idea.

Sure, it's certainly something they are interested in, each in own way, but exactly "hunting nomads" isn't the one. Hunting alone does nothing really, they'd want technology (and there you have BHG Core), not playing white armor knights. They're not some kind of animals you hunt for, that would be a terrible underestimation.

...

Actuall... on the other hand... I reckon that calling WWF and PETA would be far more devastating than rolling in sun crusher thingy. May as well play dumb animals, haha... Kidding.