Young Lando clarification and viability? Is he good, or not?

Just ran him through GW tonight with the Solo toons because we were talking about him.

His cool down on hot hand is really pretty fast. You can see the message pop up above his head constantly when debuffs are out. Although he CAN hit hard, he needs a perfect storm of buffs and ability use by other toons in a certain order to hit the really high numbers. So the big 60k hit can't really be counted on often. His good (10-20k-ish) constant damage and the spreading of prepared and speed up is his real utility.