Honestly you'd have to add Stamkos for the Hawks to even consider. But seriously, the Hawks need a center. No two ways about it, and I'm pretty sure the Lightning aren't gonna trade Stamkos or Lecavalier. But just for fun:
D Nicklas Hjalmarsson
F Brandon Pirri
2013 1st round pick
F Vincent Lecavalier
Not really a great trade proposal. But what can you do?