is it safe to delete the Tutorial neighborhood folder? What about the contents of the LotCatalog folder, the SC4Terrains folder (would you need to leave in the one you are using for the custom n'hood?), and the premade pictures in the Storytelling folder?
Deleting Tutorial does no good. It is perfectly safe to do, but the next time you run the game, the damn thing will be back. DO NOT attempt to delete it from Program Files, by the way, as this will cause the game to crash horribly.
You can delete everything in LotCatalog. Those are just the lots in the bin. However, don't delete the folder, or else the game will regenerate it and the lots will be back. Just keep it empty.
You can safely delete anything inside the Storytelling folders.
So I'm wondering whether that would be a safer way to do a round robin or shared neighborhood--passing a sims 2 folder, rather than just a neighborhood folder. That way, a defined set of downloads and hacks would be included--obviously more than I have in my test setup, but still fewer than most of us have in our main game--as well as no problems with changing the neighborhood number.
When I do round robins, all we pass is the Neighborhoods folder, which ONLY has the NeighborhoodsManager file and the N001 folder inside. We also don't pass around the contents of the Storytelling folder - we upload the pictures to an album instead. Pictures take up a lot of space.
Agreeing to keep the neighborhood in it's own game set is a very good idea. It prevents soooo many mistakes.
I realize what you are asking is how to make it EASY for people to install the neighborhood, so here is what you need to do if you want to give people the entire The Sims 2 folder rather than just the Neighborhoods folder. You only need to keep the Neighborhoods folder inside The Sims 2 folder! Everything else will simply regenerate when they run the game for the first time. SC4Terrains - it does not appear that it is necessary to keep a custom terrain (or the Maxis ones) inside this folder once it has already been used to create a neighborhood. I haven't done any extensive testing, however, so personally I like to keep the custom tertrain in there... just in case.
Inside the Neighborhoods folder, you can delete Tutorial, but everything else needs to stay. You don't need Storytelling if you want to do somthing else instead of using the in-game albums. Everything else is critical to running the neighborhood, so don't delete.
Also remember:
Cameras - if your neighborhood has lots on the edges of the terrain, you'll want to make sure everyone has the hack that lets them see more of the neighborhood.
Downloads - I think it's easier to just agree what custom content is being used. When I play, we pass along a "shopping list" -- if we add something new, like a new outfit for our just-turned-teen sim, we simply tell everyone where to get it.
I guess it would make the issue of everyone having the same EPs and patches more critical, though, because of hack compatibility.
EP and patch compatibility is ALWAYS critical in round robins. Once a neighborhood has been played by someone with an EP, it can NEVER be played by someone without that EP. So, it is critical that everyone have the same EPs installed.