I wouldn't worry about the world being too expansive with little stuff. Aonuma knows about the backlash TP got for its world being too expansive and vowed if they were going to do another expansive world game, they would try to avoid the same pitfalls TP had fell in. Zelda Wii U is still in development and probably will still be in development until the 11th hour (like up to 2-3 weeks until the game goes gold and heads for manufacturing and shipping to stores).
We can still give opinions/critique of the early look/demos as long as people know things are subject to change. Also there will probably be other modes of transport besides Epona/horses and the sailcloth. You have to know there will probably be a warp system in the game. Hopefully it won't be limited like how The Wind Waker's warp system is or how bad the warp system of Spirit Tracks is (you have to hit switches while moving non-stop and have to have awareness of which warp leads where on the world map).
Also Aonuma probably is aware of Xenoblade Chronicles on Wii and probably will draw some inspiration from it on how to the handle world map in Zelda Wii U. Xenoblade Chronicles had a fast travel option where if you clicked on a landmark you've visited before, you can instantly jump there. I wouldn't be surprised if Aonuma applied the same tech in Zelda Wii U.
We can still give opinions/critique of the early look/demos as long as people know things are subject to change. Also there will probably be other modes of transport besides Epona/horses and the sailcloth. You have to know there will probably be a warp system in the game. Hopefully it won't be limited like how The Wind Waker's warp system is or how bad the warp system of Spirit Tracks is (you have to hit switches while moving non-stop and have to have awareness of which warp leads where on the world map).
Also Aonuma probably is aware of Xenoblade Chronicles on Wii and probably will draw some inspiration from it on how to the handle world map in Zelda Wii U. Xenoblade Chronicles had a fast travel option where if you clicked on a landmark you've visited before, you can instantly jump there. I wouldn't be surprised if Aonuma applied the same tech in Zelda Wii U.