If the main characters don't talk I don't think the other characters should talk......it would seem unbalanced. Link, Ganon and Zelda can't talk but everybody else in the game can? You either let everyone talk or not. I'm voting for the not.
Hmmmmmm I would like some new items besides the usually ones, not sure what they should be.
And maybe Link can wield atleast 2 other weapons like a staff or two swords and his fight style would change with the weapons. ( imagine pole volting over chasm with a staff
)
Also 2 more shields for Link wouldn't be bad. Like a shield that absords physical and magical attacks and sends them back as a projectile. Hmmmmmmmmm I haven't play Zelda in a while is that what the mirror shield does already?
The horseback riding and fighting seems very cool, I saw a shot where link was being chased I wonder if he can do a trick and turn around and shoot arrows and then turn back around and keep riding.
Maybe they will have a big war where Link and some soldiers will have to defend a castle from an invasion. Imagine running through the castle hall helping people and beating enemies senseless.
More use of the environment would be nice, like getting behind a statue and pushing it on enemies. Or slashing a rope and some object falls from the ceiling and smashes somebody.
Oh yeah, it would be great if they made use of a weather system, they should have a weather guy in the main town, that sends you the kind of weather they are going to have every seven days and based on the weather you should be able to unlock certain sidequests.
Neways that's all i can think of for now