Great list! 
I've found these in my bookmarks:
The CountyCottage http://www.countycottage.de/jgs_portal.php (german site for TS2 & TS3 - You need to register to access the downloads)
Sims 3 Adventures http://sims3adventure.webs.com/ (TS3 obviously)
Sims Design Avenue http://www.sims3.simsdesignavenue.net/avenue.php?lg=EN&rub=accueil (TS3)