I trying to find challange in pve, so unarmed free style combat skill line could be a reasonable option for advanced player that are looking to have challenge and fun with a game: is something that a long time rpg need to consider.
the true art of ultimate warriors combat style will make a new approch with the game, with the possibility to implement new skill lines, like dress-kimono armors, new weapons like knuckledusters ans a nice unarmed combat skill, with KO, immobilizing, escape and damage over time (arm bar, leg bar...).