I would like to provide my own thoughts and opinions of Hades Brigade, having had many (somewhat inevitable) interactions.
They're a bunch of people with the right kind of mindset. They have the spirit of Roleplay, and they're led by someone who wants more than just /1 /2 pew pew. I respect that in a group.
During their time with Eclipse Vanguard, there were some interesting things happening. I felt more like the factions direction was going far better with this group adding their Roleplay and interactions to their ranks. I felt hope (lol) that they'd form both a formidable force and a Roleplay interaction that wouldn't just go "see red, shoot red". Life as a covert wild player was becoming more interesting, having to fool people who roleplayed smartly in-game. Eclipse Main, well. There was not many times they interacted, and not all interactions had been terribly pleasant. But that's probably simply to do with the way the rules work on IDs, Bounty scans and "Shoot red first, ask later" type of things.
This split, while not totally unpredictable, is probably the most necessary course of action. Since Hades Brigade announced their departure, there's been more than a few unpleasant messages from more than a couple of people. A shame really, because I would have thought Eclipse would embrace the idea that Hades wanted to spread their wings, carve their own future.
I can think of only one slightly dissatisfactory interaction with them, but that was borne out of a lack of understanding of why things were happening in such a way which, once explained, promptly generated an apology and the situation was considered handled for both sides. A respectable Leader to Leader interaction, where transparency shows you can resolve differences, even as enemies in-game. (There's more than a few groups who need this skill somewhere in their factions, if not in one of their leaders, then in some kind of representative...)
On the whole, Hades brigade are some decent people who seemed to be suffocating under the presence of the group they were previously affiliated with. I can only wish them the best of luck, and hope that they don't burn out.