Now that RoE's been out for a second, what sorts of characters have you thrown together?
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.
I'm a GM, so nothing. But I allowed my players to freely retcon any spells they have but haven't used yet for spells in the new book, or those in the remaster preview (eg Ignition for Produce Flame). One of my players is playing an Automaton and so a bunch of the Metal spells seemed appealing to him