I've been playing on and off when I can, and also checked on the forums, and haven't seen these things suggested, so apologies if they're already here somewhere.
I had a few suggestions regarding spectating.
1. Still be able to view the map/status menu while spectating.
2. Be able to cycle through other players dead bodies, not just your own.
3. Be able to pan the fixed camp cameras 90° or so.
Also, not related to spectating, it would be good to have fear and health meters, because I like meters.