Looks a bit too businesslike for me.
Personally, I like the older sim games GUI's, like Theme Hospital and the other Bullfrog games back in the 90's. With Theme Hospital, you basically drew your rooms, then placed doors and windows and furniture - but the GUI was quite pleasant to use, even my mum could play it. Specific actions should have their own form, don't show things on screen that arrent relevant. I like how everything is at the bottom of the screen in TH, then actions have their own form. It's easy to remember what does what when the screen is fixed and relevant the whole time. The Movies has a similar GUI.
Wouldn't it be more fun to develop your own GUI - think about how your own household is run - do you have a rack for keys by the front door, a pile for mail, a bowl full of old keys?. I say make something that people can relate to, there is no point in going head to head with The Sims, so why not consider all the things that The Sims doesn't do... like saving up for kids college education, deciding when to buy a car, household management if you like. The Sims is really a fairly shallow game when you look at it, it could have much deeper gameplay and actually appeal to gamers.
Health, Ammo, and bacon and eggs!
