normally take a req7 AL15, so u can speck your spear mastery higher, but if u arent the main damage dealer an end game green is fine
it doesnt have to be command like Neo Nugget stated, it can be motivation because its better to replace anthem of fire with the warrior shout that gives u double adrenaline.
i think it depend partly on what your heros run and what henchies you bring. ex: if your party can out heal quite a bit of damage then you should be fine without a al 15 req 7 one, however if your party can heal you too well your better off with the protection. also note that it is possible to reduce spear mastery and get 9 in one of the 2 attibute lines