Oooh, just like the ring in DAO that gave you +1% XP, but only worked when you got a reward of at least 100 XP?
Anyway, played the demo, was nice enough. Only bug for me was at the tactics screen, where clicking on stuff brought up wrong drop-down menus and whatnot. I liked that battles were a bit more fast-paced now, and especially that swinging a two-handed weapon doesn't take 5 seconds anymore. Some of the abilities seem a bit funny though. The warrior's rush or whatever is nice, but kinda stupid when an enemy is on a different elevation and you ram into the wall. Also, Shield Defense seems to limit attacks to only a basic thrusting attack, which makes long battles really stupid looking. Harder monsters in general seem to have so many hit points that it looks like you're whacking them the whole day... But this might just be my limited experience playing a Warrior.