In an interview, Katsuya Eguchi has spoken about the Wii U’s Pro Controller, sharing that its presence “may make it easier for multi-platform games to come out on the system”, and:
Wii remotes don’t have things like analog sticks. To make it as easy as possible to enjoy certain multiplayer experiences it was important to have that Pro controller.
From there, Eguchi explained:
We’re all gamers as well and we appreciate the interest of those [hardcore] gamers, and we don’t want them to feel left out, so we’re making big strides and changes in that area.
Even with the improved control schemes though, people will find something to complain about.