I'm also trying to figure out how many RL elements you could add to an IF game while still keeping to the spirit of both. Obvious and necessary for me are random content, combat, and permadeath/permanent actions (most IFs have an 'undo' command). However, should there be actual hitpoints, mana points, etc; or should it be more like Zork where it's more of a general "you are in good health" kind of thing? Also I'm trying to improve on the design; one of my least favorite things to do is keep track of where I am, what I have, what's around me, etc, all in my head, so I want to maybe add a HUD type display, but would that detract from the IF-ness?