its true that light is a common element in other rpgs but the thing i am saying is that we dont need the light type to balance the type chart in pokemon because minor things could fix the same problems, if the type chart was really horrible to that point then i would agree on adding the light type, its just that we dont need that shit right now.
Christ there's more than just balancing. And besides, as we argued like dicks about, the type chart IS unbalanced. Just look at the massive focus on steels and dragons in OU. And look at how some types just suck ass, like Poison.
How is it fair that steel gets to resist 11 types, be effective against 2, while Poison gets one super effectiveness and resists like, four types, two of which are barely needed? [Seriously, what bug moves are there in OU? Megahorn from the soon-to-be-BL Heracross? And lolpoison]
It needs balancing, and it needs the Light type to complement the elemental chart. You know, for fun? To add a bit of stuff to the game?
Why is this such a difficulty concept to grasp?
Plus come on, just think about it - white version gets a Light type Legendary, Black gets a Dark one, and the big bad is a Light/Dark chaotic entity. You want it... You know you do... [And it's the only way to top Arceus, just make up some story about him being some side-effect to Arceus or something]