I think that Storm of War is just fine. Storm and war in the same sentence, that might even convince 14 year old Billy -I play CoD and WoW all night long- to pick it up. When you say IL-2 should be in the title you're just preaching to the quire, those who are already familiar with the brand will buy it even if it's called "Unicorn-Horse Adventures". It really is the perfect "umbrella" -as someone stated earlier- for a whole new series. "From the creators of the award winning IL-2 series" will fit perfectly underneath the main title. Remember, if you wan't to sell, you need to reach out to a new younger audience that were probably still in pre-school when IL-2 first was released.
Make it as accessible as possible Oleg