I dislike wonder woman view but it's good for getting true airspeed readings in a hurry when i'm flying a bomber offline
On the other hand, just because i don't use an option doesn't mean others won't find it useful and i always say that the more options there are, the better each game scales to people's tastes (dependant on development time constraints of course).
I guess that having varying opacity levels would be a good way to gradually ease people from low difficulty to high difficulty settings, which is a good thing.
As for FOV, i think IL2 suffers mainly from lack of widescreen support that messes up the FOV a lot. I am a late comer to LCD monitors and having flown with a trinitron tube CRT up until last year, i can say that the decreased vertical FOV when scaling IL2 to widescreen resolutions is noticeable, but not game-breaking thanks to my using a TrackIR 4 set. Since SoW will have support for widescreen resolutions right out of the box, i guess we'll see a much better implementation and maybe more customization options.