Honestly, I'm somewhat hopeful they could. Wario Land Shake It was their first attempt at making a 2D platformer (or heck, any type of action game) after all, and the likes of Kirby's Epic Yarn and Yoshi's Woolly World have gotten better reviews in the meantime.
So I suspect another Wario Land game by the studio could work quite well. They could even bring back the 'impossible to die' aspect from Epic Yarn and recreate the feel of Wario Land 2 and 3!
So I suspect another Wario Land game by the studio could work quite well. They could even bring back the 'impossible to die' aspect from Epic Yarn and recreate the feel of Wario Land 2 and 3!