I really don't care so long as I get it free sometime. Don't really mind having modes locked since randoms Turf Wars was going to be the main mode anyway, and they're right about the "people enjoy/understand what's there more" when we start with a few and gradually have them added. It's like grinding out a character or level in another game, although I'm good enough to pace myself.
The game was made by the Animal Crossing guys though. They want people coming back every day instead of beating it all at once. Like Mario Kart for example, people just beat all the cups, play online a few weeks and drop it. Not wanting a game designed specifically for PvP to die out quickly, they added little play every day features and an equipment system that's heavily time-consuming to maximize. The result is that the average person plays less a day, but for many more days. The whole "gradually add content" business model is proven to be quite effective as Minecraft has shown. It's a unique way of doing things, and Nintendo is a company I'd trust with this with.