I actually have three other mods you may like however one of them requires a file extractor program to properly access the files to install it but trust me once you get all that set up its defiantly worth it.
The mods are:
Titanium
This is the mod that requires a file extractor program. However once installed it adds really good stuff. when placed down titanium blocks have the same texture as the old stainless steel, but my favorite part is the mod adds titanium blade traps and unlike the regular steel blade traps which have only 2500 HP and require 20 wats of electricity to power, the titanium blade traps only need 1 wat of electricity and they have a whooping 100000 HP all titanium blocks have 100000 HP.
Link:
https://www.nexusmods.com/7daystodie/mods/1230
Return of the behemoth
This is one of several mods made by Khaine as the title suggests it brings back the old planned behemoth from A16 as well as the radiated version which was planned for A17 but never got to be tested. the behemoth will typically spawn in the wasteland but will also show up during hordes. both behemoths are fully functional and are a beast to take down (a good reason to have the calibers mod) the normal behemoth has 5000 HP same as the original plans by TFP and the radiated version has 7500 HP again same as TFP originally planned. my only complaint with this mod is the behemoths should drop really good stuff like the snufkin zombies but other than that its a good mod for players who want more of a challenge.
Link:
https://7daystodiemods.com/return-of-the-behemoth/
Return of the hornet
To be totally Honest I prefer the hornets over the vultures because hornets were good sources of honey when the game wont hand out antibiotics. unlike the hornet back in A15 which were yellow these hornets are a demonic crimson red which fits the theme of the game more. just like the old hornets there easy to take down with bullets and they even have the same sounds to relive the old days of the game, and the hornets only attack when u get close to them unlike the vultures who show up outta nowhere and attack u on site.
Link:
https://7daystodiemods.com/return-of-the-hornet/
I understand not everyone is good at installing mods so Harry's new calibers is not a good start for new mod users and yeah the mod is client side but that shouldn't be too much of a problem if players in a server know what there doing. I only recommended the calibers mod because tough zombies like the snufkin ones would take tons of bullets to take down.
Let me know if you try any of these mods and tell me your thoughts on them.