What if:
Zelda launch
Mario Kart launch
Splatoon launch
Skyrim summer
3D Mario holidays
?
IMO Skyrim would be better served with a sooner release, since it's already arriving late as it is. Zelda will sell great regardless of when it's coming, and if it's close enough to the Switch's launch, as early Summer would be, it'd still serve as an incentive for early adopters.