FeatheredIV has some of the best suggestions i've seen (he's posted them at a previous time as well), plus he manages to get the point across by using good narrative.
I really liked the one where he described a Blenheim sortie, where the bomber crew is exchanging morse code messages with a RN destroyer via the ship's morse code "flashlight", which the radioman then decodes.
I don't know what we're going to see in regards to such elements of gameplay (nobody does, but i guess things will start surfacing soon enough now), but if the title is as modular as they say maybe we'll have the ability to use some AI scripts and model interactive crews.
Plus, having some of that single player functionality extend to multiplayer would be awesome as well, if only to save time if one remembers the appropriate keyboard shortcuts for the radio commands menu. An integrated voice communication interface that works like the radios of the time (with appropriate ranges, being able to hear only the people on the same frequency, etc) would tie in with that as well.
Now i'm not demanding features or anything, just wondering about the possibilities for the future. What we've been shown so far is downright awesome, i can't complain. In fact, it only makes me more excited about what we haven't seen yet