Second for suggesting a mailbox type system for leaving messages for your friends or guild mates, other players that can check up and get updates with.

I just logged in, repaired my base and changed the AA batteries out again and realized everyone was offline with no way to reach out to them unless third party programs and connections are made.
A more robust text system that supports events and emotes would be cool as well as a combat log maybe, bumping into that MMO like stuff?

Even copying the gryphon flight path system from WoW would be great, paying for the transport of local ornithopers that just let you sit back and flown out to regions or other posts with preset paths would be cool.