I wouldn't say Xenoblade games are your typical Nintendo games. Never was. Star fox, Zelda,Mario are. Skyward Sword was the worst Zelda game I have ever played. Zelda U is still not out.
OK some Nintendo games have innovation, I was a bit harsh, but they clearly playing it safe, at least technically (and gameplay wise), and lack the big scale they had years ago. Even the first Zelda on NES and Zelda on Gameboy felt more open than Skyward Sword. I would have liked much bigger levels in Galaxy for instance instead of those mini hub-levels. Same with wind waker (the open sea trick doesn't work on me). Everything felt small, too small.
Basically after Zelda 64 the Zelda games on Wii should have had the scale of Xenoblade. Technically on Wii we know it was possible because of Xenoblade, but Nintendo are playing it safe and there is no increase in the size of the levels, quite the contrary.
Yes Metroid 3D games were great and ambitious but they were developed by an American studio, not in house in Japan.
But they know this (Aonuma have being playing Far Cry 4 to understand how big open worlds works, a bit late don't you think?) and want to correct it with with Zelda U, which is good. We'll see.
Xenoblade are definitely not typical Nintendo game, but that is good, because they need more games that are not their typical games.
Skyward Sword is great game and good Zelda game even you dont like it, fact that is linear doesnt mean that Nintendo were playing safe with it, Twilight Princes (basically bigger OoT) that was more open world was actually way more safer than Skyward Sword.
Not every Zelda needs have huge and open world, Skyward Sword is proof of that, its big and ambitious game even if is linear. And we getting this year Zelda with huge and open world.
Why Metroid 3D game or any other game need to be developed by Japanese studio!? Metroid Prime is developed by 1st party Nintendo studio, thats whats important. We talking here about Nintendo games, not about Japanese only developed games.
Aonuma said he playing lotsa different games and that doesn't have nothing with big open Zelda game (dont expect nothing similar with Far Cry 4), he said he always wanted to make true open world Zelda (actually almost every 3D Zelda game is open world expect SS, but not true open like Zelda NES was) like Zelda NES was, but he couldnt done what he wanted because hardware limitations, but now he can do that with Wii U hardware.