I got a few guns for suggestions and my opinion on these guns is that the server will be still playable as being a zombie expect that they'll need a lil nerf.
1.X Tracker
2.Devastator (The rocket damage could be nerfed,same as the ammo,just one clip has 350 bullets)
3.Balrog 5
4.Magnum Drill (2016-2017 Classic that doesn't even crash at all,pretty simple to code and resource)
5.Trinity Grenade (I think that it would be actually useful to add this thing and replace the other grenade,this one also delivers a napalm effect dealing 200-400DMG/s for 5-4 sec)
6.Destroyer (We may have enough snipers,but i find this gun pretty good,in CSNZ it deals 1700 to 3k damage along with a boost from the explosive bullets,but i think that we can work on it)