I've purposefully been holding off on making anything until 2.5e drops, but i'm pretty excited to put together an Anadi Wood Sorcerer+Elementalist that specializes in fabricating permanent objects during the adventuring day. Rope bridges, grappling hooks, nets, whatever you need, so long as it's got some rigid or rope-like components, they can put it together over the course of a short re-focus.
It looks like a lot of us are still running the characters that we already have in a campaign. :) I'm enjoying looking things over, but I haven't built anything yet.