You don't necessarily need bunters to prevent inter-house conflict, all you need is communication and cooperation. Besides that though bunters are not a bad idea.
I think Bunters are more like a cleaning tool in the space that cannot be reached by House Authorities. Then again, that would be the best explanation for now, as I think we should take into account that trying to enforce different laws in Kepler and Hudson would be quite problematic.
I have been a witness when BPA And LN elements met each other in Cortez, and one guy with 5 artifacts on board was directly at Curacao. Both authorities had different opinion on these, as they wanted to enforce their own codex. It almost ended up in bloodshed, as BPA warned LN to not to assault vessel and declared the vessel will be protected by Bretonian Crown. In the end, guy left for Coronado, if my memory serves me right.
