The Middle East isn't important? Did I miss a memo?
Shoot, in my last MP game as Germany, I took out Turkey, Syria, the Suez, Iraq, the Saudis, Yemen, and Oman to get the oil (and seal the Med). And I needed that oil under 1.3.2.
I imagine it's even more important now in 1.3.3. If the Allies are bombing your synthetic plants all the time, even 20-30 oil from the Middle East would be handy. You have to bottle up the Soviets to prevent them from going in and taking the oil, but that's what Turkey's deserts and mountains are for.
Regarding sealing the Med: You only need to contest the Suez and the straits at Gibraltar to seal the Med from Allied ships. If you occupy Spain and the east side of the Suez, the Allies are sealed in the Med. They can still receive convoys of supply to North Africa and Egypt via certain ports, but the islands and Italy are basically off limits, as my enemies found out the hard way.