Why not to make Shaman Totem effects raidwise?

With upcoming 10 and 20 man raid content, is it still matter to keep totem effects to be groupwise?

Will it really spoil a “classic vibe” if we get rid of necessity of organizing raid groups specifically in order to min-max totem effects and just let shamans make arrangements themselves like Paladins do with Auras? I know that “convenience kills journey” but maybe this isn’t the case?