The only Nintendo team I trust with DLC is Monolith Soft.
Both Xenoblade expansions have been well worth the money. The fact that the XC3 expansion pass included two new heroe questlins, a roguelike mode, AND an entire 25 hour JRPG for only $10 more than the DK expansion (only a roguelike mode) is insane.
The Xenoblade 2 expansion pass was arguably even bigger at the same price.