So the "5 Habits" you seem to identify are:
1. Intense Concentration
2. Talking to the game/AI
3. Modding/Altering the game
4. "Emergent Gameplay" - which I would call "creativity"
5. Suicide Gamers - limited to games where this is possible
I don't know what your experience is with video games, but I would guess you don't know any gaming addicts. I know "Top X" lists are all the rave in magazines these days, but this seems like a rather unfounded list for something that is so easily diagnosed. Let me give you a few ideas of what "Gaming Addiction" is really about:
1. The person stops caring about the real world around them, and chooses to live vicariously through a virtual one. (The next 4 fall into this general category, but I think this sums up the beginning of the addiction)
2. The game(s) take precedence over the person's real needs, such as eating, exercising and general hygiene. This is why South Park depicts a fat, unkempt loser eating cheetos.
3. The game(s) become more important than the person's job, family and friends.
4. The person develops reasons or excuses as to why he/she can spend so much time playing the game(s). They say "Oh I just gotta finish this one level" or "I just gotta get this achievement", and the task takes them hours, if not days to complete.
5. When the person becomes immersed in the game(s) while not playing it.
These might sound like a drug addicts habits, but that's because addictions always trend toward the same ends. These are very real issues, one's I've had to deal with personally to some extent, and with others around me. Regardless of the circumstances the point remains the same, when you become enveloped in a specific substance/world/state of mind, it will become all that matters.