Fixing the issues with his energy summons would really be just as simple as adding that the constructs have to originate from his body, and from there be sent as raw (visible) energy to coalesce at the target point, or formed into objects and launched. Putting a limit on the projectile speed and amount he can summon at once would also help immensely.

Apart from the issues that always seem to creep up though, I agree that he's an awesome character. I'd hate to lose the history he and Arthur have.