It would be nice if the user could enter a player name / nickname for themselves in the system settings.
This can then be used in-game as suggestion in a character-creation screen, or leaderboard entry.
This prevents users from re-typing their nick into every game, which would be a chore with the on screen keyboard.
Perhaps there should be a 10-char character limit. That would make it more practical for use in dialog boxes with limited space.