In period? Yes and no. If you watch enough black and white war films then it begins to seem as if wartime was like that but it’s only a very narrow idea of what I would imagine (and I stress imagine ) life was like. The film has very little reference to anything beyond the stiff upper lip version of aircrew we are used to. A real honest portrayal that is truly ‘period’ would have crews wetting the back wheel, representations of other classes and a bit more realism and grit to it. It’s a stylised version of 1943.

But you simply can’t replace the ‘experience’ of people that lived through for real in whatever way. No modern actor, no matter how good, will still act as they are now, not someone from 1943, as they simply can’t replicate that, it will only ever be a director/actors interpretation of how people behaved. A new film would be equally stylised version of 1943, just in a different way (I’ve done enough Living History/Re-enactment/Film & TV work over the years to have an idea of this)
Yes, the special effects would be better, but that’s about it.