The current player to player messaging system is great, but some additional development would be useful:

1) Let players know that if they do not want to have a conversation with someone who's messaged them, don't reply as replying opens the dialog. They can't send you a message after the first unless you reply.

2) Once you have started a dialog all new messages are sent to the END of the list. If it is a long conversation that could mean a long thread that you have to scroll through to get to the new messages.

3) There does not seem to be a way to collapse/hide/delete any messages.

4) You only ever get a single conversation thread with each other player. Can we start a second thread in any way?

5) If I block a player, is there a way to unblock them? (just curious)

6) Can you have a multi-player (more than 2) private thread?