I think Storm of War: .... is a really good choice, it's new. There are a lot of suggestions made already that there will be more than flight addons, you can man already AAA, so in future addons you can possibly also man cars, tanks etc.
I don't think choosing il2 as a name for SoW is a good idea since the name is already being used by others with their il2 sturmovik :Bids of Prey

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Il2 is a plane so that would be a strange name for a tank simulator. And SoW uses a new engine, so that's another reason to call it different.
And maybe it's becomming a little bit confusing. People can say CoD 7 etc, but can we say il2.7? I don't think so.
If SOW will be called il2 sturmovik there will be:
il2 sturmovik
il2 sturmovik: forgotten battles
il2 sturmovik: pasific fighters
il2 sturmovik: 1946
il2 sturmovik: birds of prey (by different creators, it's no simulator and lacks a lot of things (good damage models, mission builder etc))
il2 sturmovik: wings of prey (also not by Oleg Maddox Games)
il2 sturmovik: battle of britain (by Oleg Maddox Games, new engine, simulator)
il2 sturmovik: Battle for Moscow
il2 sturmovik: Korean Theater Ops
il2 sturmovik: aarg! too much!