Read what Toriboomer said about the thread. There's a "Suggestion" board, which is a sub-forum of "The Game" board.
Anyway, most of your suggestions have already been... suggested.
The first one wasn't really appreciated by the players if I remember well. Not sure though.
The second one is let's say, quasi-possible. You can use the worldbuilder to create swords & stuffs like that.
The last suggestion has been suggested a long time ago, and you can fight a 3-4 replay generator in the Mod board, third-party board (correct me if I'm wrong).