Just make the greatsword available too all infantry. That would solve the disscusion about making swadia a permanent faction like on camelot, since its not swadia people care about, its just the greatsword. Personally everytime i pick a faction and swadia isnt available im dissapointed, since all other weapons are slower, weaker, cant stab or some other shit and i dont have nearly as much fun with them. If you're concerned with "variety" then this might actually help, since when swadia is available most people default to the greatsword and all other swadian weapons are barely used. And as one person once said "maybe they just want to play like that"
(also give everyone the great lance for dealing with cav)