Dragonite could be a fun card to base a deck around. 140 HP is great for a Stage 2, +30 Weakness to Colorless shouldn't be too bad unless Blissey gets popular again, -20 Resistance to Fighting is always useful, and 3 Energy to Retreat is bad, but expected for a Stage 2. Hyper Beam is meh at 3 Energy for 40 damage, even if you get a chance to discard an energy attached to the defending. Draco Meteor is what makes Dragonite worth a look at; for 4 Energy, you can flip a coin for each of your opponent's Pokemon, and if you get Heads, it's an auto 50 damage to it. Great sniping, but many people will hate it for its flippy nature, which does detract from it overall. Shame Boost or DRE still isn't around, this card would be so much more fun to use then.
Modified - 5/10 (Too flippy for a tournament, but could be fun to use at League)
Limited - 7.5/10 (If you ever get one out and powered up, it could be good to use)
Unlimited - 1/10 (Gets killed by ER and SER, but you also have Double Colorless to use here too)