Being a "jack-of-all-trades" style with broad emphasis and little need for continuous and dedicated practice, Niman found a niche amongst Jedi Consulars who instead preferred to focus on diplomacy and meditation on the Force rather than combat. Ironically, Niman became the chosen discipline of the fallen Jedi-turned-Sith Lord, Exar Kun. During the various wars against the Sith, Niman was prized by some for its general versatility on the battlefield, though heavily criticized by others for being insufficiently demanding. Over time, it became the standard in lightsaber training, and by the start of the Clone Wars, was one of the most common forms in the Jedi Order. However, Niman demonstrated itself to be inadequate for the open battlefields of the Clone Wars, proven when all the Form VI adherents involved in the First Battle of Geonosis died in combat. I think that would beg to differ with the needing to master something else (direct quote from the wook), considering it was the standard for millennia, and favored by the least lightsaber oriented parts of the order. it was pretty much expressly for the purpose of knowing how to use a lightsaber... and then never really bothering to work on it because your focus was pretty much anywhere else, be it diplomacy, study of the force, bureaucracy or what have you, there's a reason that everyone that used it at geonosis died... because it turned out to be the weakest form of all. as noted by it also says that it's the least intensive of all of the forms. i find it amusing that even form one is more effective than niman. this pretty much directly contradicts the "difficulty" of the form as well. Form VI covered many of the various moves of lightsaber combat, but due to its emphasis on overall moderation, its focus on bladework was somewhat relaxed. Thusly, the form was easily mastered by those who preferred to devote a high percentage of their time to study and peacekeeping, which made it the preferred form of Jedi Consulars. While the generalization made it ill-suited for lightsaber dueling or fighting on the open battlefield, it was perfectly adequate for facing down criminals and thugs. Due to its "jack-of-all-trades" nature, the success of this form was largely dependent on the practitioner's intuition, improvisation, and creativity in combat rather than the rote responses derived from other forms. of course, that depends on if you're going by the old version of it, or the current one where the focus is on dual wielding lightsabers, which is a smidge different from what it was. this is all of the information that we have that is currently canon: Form VI, also known as Niman was the sixth form of lightsaber combat used by members of the Jedi Order. It was used to combine double-bladed lightsabercombat with other Force abilities, like pushes and lifts. not very much to go off of, and since you were quoting from the legends information, i'm guessing that you're using that.