@DonWii & shams
Ah, didn't get that from the context. Hehe.
Unlockable content is always cool. Secrets and real easter eggs are even better. I can't remember where I read it (an online review?) but I recall something like 20 hours of gameplay for a first time through SMG. I highly doubt that is with a completionist take on the game. I know I'm a little slow on the uptake so it's no surprise that it took me a few hours to finally figure out that flying cloud platform level in Mario 64 to get all the red coins. And I spent a couple hours figuring out how to get that jump out of the half-pipe race to get a 14 second time. The discovery with Mario games can go on for years and years. I'm very interested to see how many things the developers will leave in that can be utilized for things like speed runs.