Sounds kind of like a mercenary guild.
No, Mercenary still works. Assassin is more "hire for kill" where Mercenary is "hire for kill or protection". Like in Mass Effect, you hear of several Mercenary groups hired to kill someone or protect someone. Only thing is sometimes they got shady when it came to getting people's money for their protection.
It would be both profitable and fun, but it depends if your group has morals or not. That will decide how much money you can make.
It sounds like a good idea, but the best way to optimize profits would be to begin building up your organization now. You should make a post under guilds and/or the server you plan on playing on.
Oh hey there
Great idea, would love to see a Adventurer Guild that I always read about on JP novels.
May the best one wins!
I hope it will work as I am planning on hiring some guards to protect my ass. Especially if out exploring.
IMO, it would work, it would be profitable and it would be fun. And if you come across a Queen by the name of Daenerys, it may be insanely profitable.