Can we have a zombie planet for Halloween. or a permanent zombie planet to visit. can be a science experiment gone wrong or a parasite on the planet us for a host.

Or give us foundry tools to make this would be fun.

It could be a small quarantined area so it doesn't affect story or canon.

Stuff like this is actually possible in the foundry, more or less. Check out my mission "Night of the Logical Dead" for an example.

The Borg are pretty much zombies. They walk really slow, turn their victims into more of them, have a creepy appearance, and the npcs are afraid of them.

Woah dude, let's get summer out of the way first eh?