Ski's themselves are still in their infancy, trust me on this one. Shit like Volkl's V-Werks technology will definitely be the future:
http://vimeo.com/74486848
And wood is great, but at some point I think we'll see a shift away from it to some form of engineered material. If the right kind of foam comes along, something that's extraordinarily pliable yet relatively stiff, that would be a game changer. Foam is sick stuff despite the bad rep it gets.
Edge's have a long way to come as well. They're great for what they are right now but there's definitely a need for edges that bond into the ski better.