Ok boys - step one - build a long boring spreadsheet er, I mean combat system. Also substitute "innovative and ground-breaking" for long and boring in the press release.
Step two - add a 1 minute timer to any simple activity and give each mob 3 times the hit points of any player as a way of extending the "content".
Step three - Spread the development team so thin and add as many features as possible to the game so that there isn't any way that any of them will work well at launch and most of them will be down right broken. Make it a goal to fix the first third of these and call it an expansion.
Step four - profit!
Can I have my thousand dollars now?