The EP of my dreams, would be the Sims Farm. Planting and harvesting all kind of fruits, vegetables and cereals, raising animals, being able to cook and sell the products (fruits+vegetables, eggs, honey, meat, bread,...)
Riding on horses, having rodeo's contests, driving a tractor, building all kind of stables or hen houses...
I haven't buy the Seasons EP yet, but I don't think the fruit harvesting part is gonna live up to my expectations!

I second that. I would love to have Sim chickens, cows, horses, pigs etc. I remember for sims1 I found someone who modded them and it was awesome, but I can't find anything like it for sims 2.