In-game chat - improvement suggestions

[uncle]

• There should be a command /me (as seen on IRC and in other games).
  When I type in the chat for example /me needs a break, the message that would appear would be *Uncle needs a break (with or without the star).
• Another thing that I really like is browsing my message history via pressing the up arrow button. When I type something in the wrong channel (in a team chat, or before someone I chat with enters/leaves a room), I have to write it again.
• I think that the chat history displayed when using M should be extended (maybe via a scrollbar).
• If I could use the cursor to edit characters in the middle of a sentense, that would be great.
• I would also extend the message length.