Thanks for the comments guys!
Clayworld I should mention that while there is space for them, not all sims 1 lots are in my world. I have based it around the Sims 2 era so have left out certain houses which wouldn't fit.
BlueStreet Not sure if this is what you mean, but there has always been a river running through the sims 1 street loop and past the gothic quarter. There is of course no river in Sims 2 Pleasantview but like I said I wanted this world to integrate both neighbourhoods.
Anyways I'm still playtesting for now. Here's some pics of the world in-game (testing for weather asthetics ;):
http://lvlt.thesims3.com/sims3_asset/sims3_asset/media/shard000//shard000/082/535/016/00/screenshot_original.jpg"height=400width=300"
http://lvlt.thesims3.com/sims3_asset/sims3_asset/media/shard000//shard000/071/535/016/00/screenshot_original.jpg"height=400width=300"
