I know this is too early into the development but I just want to put it out there and have it in the developers mind.
1-Rain effect sound when inside buildings.
https://www.youtube.com/watch?v=X0xrIdE93Ss.
Feature Request-When inside a building while it storms outside, It would give alot of immersion if there was a wind effect (whistling sound).
https://www.youtube.com/watch?v=VbOp2aabvXM.
https://www.youtube.com/watch?v=JomcPnGYL6A
Different rain impact sounds on different types of areas of floor is another example.
Reddit: http://www.reddit.com/r/dayz/comments/2t2ay0/dayz_rain/