I am looking forward to another "timeless" game, where there is no clock to inform me how long it's taken me, nor how much remaining time I have to beat the game (or rescue my mother). LW (the original LostWinds) was wonderfully relaxing since we didn't have any on-screen reminders about how long it's taken us so far to play.
I am looking forward to the story continuation. While the first game got me from learning who Toku was, to understanding that I must restore the power of Wind, to "saving" the end boss, I like that LW:WotM will give me a quest to save my mother (and any other elements that were described in the backstory of the first LW).
LW let us use wind and fire, and to a minimal extent, earth (rocks/boulders). LW:WotM appears to now allow us to use water (swimming) and ice (changing the elemental state of water). This looks exciting.
Will we be able to combine these elementals like we did with wind and fire? For example, you must plant a seed which is too far out of reach to use Vortex+water, so instead, you throw snowballs at the "planting site" and melt the snow with fire to get the water needed for the seed to grow.
I also saw in the teaser trailer that you can throw a rock onto the frozen lake and get it "stuck" on the water's surface. Will we need to roll boulders across frozen lake tops (or other items) in order to solve puzzles or get to "normally inaccessible" areas?
Lastly, just to reiterate previous threads about replayability. I would love to see some game elements that aren't required to beat the game, but that are optional so players can choose to return and collect them after the game has been beaten.