On the Rogue abilities:
Why no love for Sly Flourish? Do people not realize it can be used with a ranged weapon unlike Piercing Strike and Riposte Strike?
Oh, and there any errata on Riposte Strike yet? Because there doesn't seem to be any range limitations on the riposte interrupt attack.
The power has the melee keyword and no listed range. This means that all attacks that you make with it have a range equal to the range of your melee weapon (most likely 1, unless you've somehow found a light blade with reach).