Would it be possible to add better loot to the guards like grenades and guns that are configurable?

Can you also make the guards throw smokes and mollies on occasion, it makes them alot more strong when players can hide behind something and free shoot the gaurds walking around and not engaging. Smokes make them alot more scarry!

will look into this for you for the next update

You can already change the weapons and grenades!

"ShortName": "smg.mp5",
here you simply enter another weapon.
And instead of the syringe you take a grenade or moli.

@Kaffeebohne Thanks for that, you said another weapon, can I add smokes and molis?

Yes you can.
as I already wrote - you can the line
"ShortName": "syringe.medical",
"SkinID": 0,
"Amount": 10,
"ammo": null,
"mods": []
use to replace the syringe with a grenade or molotov.
You need the appropriate shot names for this.
e.g. "grenade.molotov" for Molli.

I understand you, I just didnt want to take away the med sticks from the npc. I wanted to give them meds AND throwables

Basically, the "NPC Spawn" gives this possibility.
But you are right here - the cs file has to be edited - 
because these additional options are not generated in the output of the data file.

Can you change the amount of your NPCs that spawn?

that makes sense to me, I have limited coding experience and didnt want to break the NPC by just adding thing willy nilly, I just wanted the tank guards to be able to use smokes and mollies in addition to med sticks