Wait, since the Switch will most likely have online features and let you link up your Nintendo account to it, why don't they do with the same thing they did with Smash for Wii U and 3DS, and allow you to play the DLC you purchase on both systems, except instead of making a combo pack that costs more, simply allow it normally. So for example, say Breath Of The Wild got DLC and you bought that DLC on Wii U, it would also allow you to access the same DLC on the Switch because you bought it on the Wii U.