Hey Prawler, your mailbox is full so I decided to create a thread here for modding discution.
Feel free to move or remove it, if this is not the correct place for it.

Anyways, that is good news that the next EP will include Zombies and other supernatural stuff! But I'll definitelly won't be doing a zombie mod now...

You also mentioned a "no traffic what-so-ever mod"... that I'm not sure if it would be to easy to do without going into Core modding (which we don't really want). I'm not sure if that can't be done easier by simply creating no roads... just a texture/paint that looks like a road...
Or you might be able to do it via XML tunning (I saw there is a ChanceOfGoingToCommunityLotByCar tunning setting in the lot object), but I'm not sure if it would work for non-community lots.

Adding new behaviours/interactions to the game is not too hard, but changing or blocking existing game behaviour is a bit tricky...

I don't know if you have anything else you would like me to do?
Maybe making use of Ambitions meteors and explotions?

Not sure if you might also want to go for ghost town instead of zombies? turning sims into ghosts and back is also easy.

Sure, I can look into making lethal traps, it shouldn't be to hard.

I swear there are lethal traps in WA?

It's tough to kill Sims with those traps, but if you make the door lock behind them and leave nowhere to run...

Surprise! HALLWAY OF DOOM!

Ok, here's something I think would be cool for you to add in the world package.

The object itself is a rubber ducky, only it's pale blue and purple instead of yellow.
The idea would be to palce it in discrete locations, hardly noticeble.
It has one interaction: "Inspect".
When the Sim goes to check it out...
POW - it explodes in it's face!

I've attached the initial version of this object mod, in case you guys want to try it out.
To put it in a lot, you need to type the "testingcheatsenabled true" and "buydebug" commands, and it's available in the tomb objects section.
It has a debug interaction (ctrl+shift+click) where you can define the explotion size.
Small/Medium explotions will "hurt" the sim, reducing the Energy, or kill him if the Energy reaches 0.
Large explotions will most likelly kill any sims near the blast and destroy a large part of the lot...

The idea is to add other effects in the future, which could be good or bad - like giving the sim extra powers/skills, or droping and meteor on his head or turning him into a zombie (when available)...
So that the player will always be tempted to Inspect other duckies to see what it would do...
Other ideas are welcome.

I've put this behaviour on a RubberDucky clone object, but it can be very easily set to any other custom object.

I'll test the duck when I can -
lol I almost write something else! Had to edit it