1. The design calls for three legs. I'd say it was to reduce costs but the rods cost only $4.00 each. From what I understahd it's much easier to level with only 3, though it does look a little funny. My friend suggested putting one in the back and 2 in the front (or the only way) as opposed to the sides.
2. Yes otherwise you need some rubber base or something.
3. I need something in the back for the cables.
Harman Kardon AVR-120,Axiom VP100,Axiom M22Ti,
Axiom QS8, Axiom EP-175