Because it's not my idea and I want to make sure that it's not already a thing. Also it's not really a squad, it isn't as big as, say, the RSI or -cough- -cough- C.L.O.A.K. (I'm speaking in the terms of portrait largeness, not how many people has joined.) this wouldn't be in anyway organized. The Ember Mark would be a family, dating back to almost the beginning. This family would be known for turning out some of the greatest fighters and strategists known to man. They may have even had a musical aspect. A while back something happened and they were hunted down and eliminated.
Now, it is very hard to find a direct bloodline, but they still exist. Because of they're skills, many have turned to bounty hunting and mercenary work. Some have joined the Resistance, and some even the Empire. Some know of they're heritage, some do not. Some even think that it was just an old group of bounty hunters. Those who do know have constructed hide outs, communication means, and if you mess with one, you are liable to get several more on your tail.
Basically, don'y mess with the Ember Mark.
If this thing with the Ember Mark falls through, we could put another name on it, come up with an awesome backstory, and create it as it's own thing.