What you're asking for isn't "standard zombie game." It's "arcade style zombie game."
And I don't want that for DF. I expanded on the small amount of lore the game has. I don't see the point in adding a ton of real world weapons "Just because" since it has no value. A gun is a gun is a gun. It just has a different skins, slightly different stats and uses more RAM... for no reason other than "because it's cool."
I mean, at one point, TFP even hinted the zombie virus in their own game was ALIEN on origin. So you really can't complain about DF.
My point to the OP stands, and I now extend it to you.
If you don't like it, make your own mod.
Also I refuse to copy zombie ideas from other games. That's asking for copyright issues.