Nintendoland's plainly being developed around internal Nintendo franchises. As a result, Game Freak and Intelligent Systems franchises are nowhere to be seen.
Otherwise, I'm pretty sure that Takumaru's Ninja Castle could have been reskinned with Pokeballs and Miis wearing Pokémon costumes.
I'd bet that this game will be seeing DLC minigames in the future as more games from their respective franchises start to come out.
Sad that Metroid has been reduced to this... but I guess the writing was on the wall. The games look fun though. It's a shame that every Nintendo IP has been reduced to this whimsical fantasy angle. There was a lot more variety before.
It does cheapen the IP's image. Just like the last set of kinda shitty Metroids, or how a lot of spinoffs can cheapen the image of any IP (Final Fantasy is a good example).
Someone should have told Nintendo these things before they made Smash Bros. then.
However... I don't think these individual minigames will do much as "bridge" titles. I think they're fine by themselves, but many are so far removed from the basic gameplay of their respective franchises that they will do little more than make certain brand names more familiar. But perhaps that alone is enough to pique interest in, say, Pikmin 3 when it rolls around.
Yeah, while I don't think NL cheapens these franchises, it definitely won't sell people on them, either. In Smash Bros., you play as the actual characters, with actual moves, using actual items in actual stages from their respective game series. In NL, you get some of the aesthetic... and some of the sound (like the remixed Dark World theme in Battle Quest)... and some of the gameplay motifs, like bow and arrows in Zelda... but on the whole it's something else entirely. It's not meant to capture the imagination in the same way.
But don't get me wrong: NL looks awesome. Definitely the coolest minigame collection Nintendo has released in quite some time. Definitely the most aesthetically appealing, too. Just don't expect it to act as a "brand ambassador" in the way Smash did. Especially as it's not bundled with the basic set and will be seen by only a fraction of the people who saw Wii Sports.
Why wouldn't it? The only way Smash Bros. acts as a brand ambassador is aesthetically. You can't really appreciate a character in Smash Bros. like you can in their own stories because the characters are too out of context to allow for that. And the moveset doesn't accurately represent the gameplay style of the games they come from WHATSOEVER. So the only appeal to a franchise that Smash Bros. offers is "look how cool this character is" with no understanding of the game they come from.
NintendoLand is the opposite side of the same coin, making the hallmark about a simpler aspect of the gameplay from those franchises, rather than just an aesthetic hallmark.
Boil down Mario, and what is it? Running and jumping. So they made a mini-game about that.
Boil down Metroid, what is it? Running and shooting. So they made a mini-game about that.
Boil down Zelda, what is it? Medieval weapon fighting and puzzles. So they made a mini-game about that.
Of course, then there's things like Animal Crossing... you can't convey Animal Crossing's gameplay scope in a mini-game, so they just did something fun that borrows elements of the gameplay (collecting things out of trees and on the ground) and built a game around it. And not sure what they were thinking about with Donkey Kong.
But for the series listed above, NintendoLand does more to attract people to new types of gameplay than Smash Bros. EVER will.