Well the term Gray not only applies to Jedis walking both sides.... but those who dont agree with the Jedi Coucil... As Qui-Gon Jinn... He did report to the council but did things his way... And I believe he did fall to the dark side once... theres a comic about him... he fell in love with another jedi, she got killed and he let the anger posses him and went nuts... he did calm himself and back to normal for the movies thou

But yeah, we shouldnt categorize ourselves as Gray Jedi and leave it open... We are more of a secret group that has members everywhere.... and i do mean everywhere... so that leaves option open for everyone... inside the trooper ranks, in the underground world that smugglers move around... hell we could even have jedis(or siths) working for the empire, but reporting to us. That way we could draw a lot more people and just not people wanting to be "gray jedis"

Even thou you don't like using High... It is canon... So personally I think it should be High General instead of Commander... Plus Jedi's are the Generals and High Commander just don't quite make it . Just my 2cents