• “… we open up a whole bunch of the game to modders that I think will impress people. Not sure where this idea that [modding] was harder came from. Newer, yes, different yes but not harder.”
• “I assure you, there will be fully featured very large expansions.”
• “Similar to Sims 2, the new formats will start out hard and get easier as the team works with the modders and updates/releases tools.”
• “Meshes are at the high end of hard (as you would expect). I just went down and asked the (very tired) Sims 3 team leads. It is very high on their agenda.”
• “Making meshes to put in the game is not that hard, its getting everything to work perfectly throughout the game that is the tough part.”
• On availability of nude/no-censor mods: “Given the priorities of modders, learning the system, testing time, audience demand etc I would say ………. Day 1.”
  

That seems to confirm post-release tools (neighborhood editor FIRST please!) and technical support for modders.

Also, Rod Humble thinks Sims players are perverts. Aren’t we all? :)