The problem with these systems is that no matter how much you try to smudge all over that they're "nice" and "epic" for both sides of the argument, there remains the risk that your work will just fall on deaf ears and nobody will follow through with your roleplay. This isn't bad per se, but it is exhausting and largely the reason why other Houses haven't touched such regions after the law changes (case in point Snak3 commenting on how making things "more complex" is bad). Besides, the remaining parts of the playerbase and dev team to an extent oppose House expansion, which doesn't make a whole lot of sense given that if done properly, House interest conflicts could spur easy activity. It is what it is.
The DSE conflict doesn't have any chances of becoming an issue between Bretonia and Liberty because the bases didn't comply with Bretonian law first and foremost after they failed to respond in a timely manner. As for a direct conflict, that too is out of the question, but since both CR, Br, and Lib are working over updating the Curacao treaty, I will try to at least put in articles vague enough so that border skirmishes are possible should the situation deteriorate that much.
