This is an excellent idea, and i think it would definitely bring a level of humanity to every character. Also being able to keep track of players who are friendly or not, towns where you found the most loot, and a log of your personal days would add just one more level of realism to the game. The game even tells you what day it is of your characters life, it is begging for a journal system. LISTEN UP ROCKET, its simple, its elegant, and its fits into your formula.