You Can not Download things who need UNI. Only those things who only need NL ore base game. If you want somthing who request(?) UNI you need to have that game..
Yes you can make townies Here is the way; 1. Start in a empty neighborhood 2. Write the code; "DeleteAllCharacters". 3. Make the sims you want to be a townie in CAS. Put the sims in the family container. 4. Make a sims and let it move in to a place. 5. Write the code; "BoolpropTestingCheatsenabled True". 6. Press Skift on the sim; "Spawn" > "More..." > "NPC and Townie Maker". 8. A tree will appear on the place. Trun the code off; "BoolProp TestingCheatsEnabled False". 7. Click on the tree and choose; "Make into Townie" > [Name].