I knew that Mikhail had to be involved since they dropped the name Aaron...Mikhail's back,...

I agree...I need a LOT of Fei though. x)

I miss him too, especially his beautiful long hairs. But I kind of thinking if he returns, it would look like the end of Naked Truth arc and it wouldn't give new informations about Mikhail's intentions or in general. But eventually, Sensei might have planned Feilong's return during the arc or in a new arc.