This deck is very versatile and is a very good rush deck.
I think you can switch Illidan Stormrage for another late-game card, like Leeroy Jenkins or Tirion Fordring or someone, but I like his ability and mana cost. Avenging Wrath is a good card in this deck for a damage output and Consecration is basically needed for this type of deck. Leper Gnome is a great opener, because even if a Mage hero powers or if a Priest Holy Smites or if a Hunter Arcane Shots it still does 2 damage to the enemy hero. I like Truesilver Champion because it does a pretty good amount of damage (this with Bloodsail Raider is a great combo) and restores enough health. Knife Juggler is OP, even if he is silenced, because he is a 3/2 for 2 mana and does 1 damage for every summoned minion (you should be summoning a lot of minions). Also, the Paladin's hero power (summon a 1/1 Silver Hand Recruit) activates Knife Juggler's ability. Flesheating Ghoul is great because a lot of your minions will be dying. I would recommend putting any buffs on Questing Adventurer (who is also amazing in this deck), Thrallmar Farseer, Raging Worgen, Shieldbearer, or Goldshire Footman. Buffing a windfury minion essentially doubles the attack output.
I would recommend using this deck a lot and getting comfortable with it before you delete it, because rush decks can be hard to master.
Any other questions, just ask.