If it's possible to create merged installations of titles based on the same engine but done by different developers, we could be in for a treat.
Imagine that they license the engine to a studio that wants to make a ground combat game for example. Now imagine you can merge this ground combat game with the same installation as your regular flight sim SoW, just like we used to do with the different IL2 expansions. Voila, you have ArmA 2 in world war II but with better physics and more in depth simulation
What i would be interested to see is a port of "over flanders fields" (the CFS3 total conversion mod that deals with WWI air combat), as they have done an enormous amount of research over the years. I think they have the most accurate timelines for each individual squadron regarding plane types, ace rosters, aircraft skins and airfield movements, plus archives about what the weather was like during each day, but CFS3 is a very old engine. I'd love to see the result of it done on the SoW engine.