The only really balanced mod nations I could dig up is
LA De Dana, Fir Bolg Renewal: http://z7.invisionfree.com/Dom3mods/index.php?showtopic=2142
Byzantine Pythium: http://z7.invisionfree.com/Dom3mods/index.php?showtopic=1921
I really like Byzantine Pythium one of my fav mod nations I've played with.
Jomon Broken: http://z7.invisionfree.com/Dom3mods/index.php?showtopic=1967
could also be give a look I think it pretty balanced

Here a team based map that could be fun to mess with http://z7.invisionfree.com/Dom3mods/index.php?showtopic=2222 to big for a Blitz tho
This one reall nice as well http://z7.invisionfree.com/Dom3mods/index.php?showtopic=2026

Here my mod that i've not work on in forever and really should XD it adds some new magic Items but it in super Alpha http://z7.invisionfree.com/Dom3mods/index.php?showtopic=2131

people who are using NationGen grab the new version fyi http://koti.kapsi.fi/~elmokki/dom4/unitgen/mounts.png

This might be good to help UW nations and people to get UW http://z7.invisionfree.com/Dom3mods/index.php?showtopic=2113&st=0

Cataclysm mod that Alk suggested for some interesting blitzes, bases the gameplay around sites so that you rely on those you find for your powerful units and other stuff:

http://z7.invisionfree.com/Dom3mods/index.php?s=89df03233400137c38e9cc6c900beb7f&showtopic=2249

Hello lovely people!
On Alk's suggestion we (Me, Drith, Alk and Hawk) have collaborated on making a pretender balance mod for dominions 4. It's main aims being nerfing the OP outliers (hello Caelum!) and trying to make some of the less used choices more interesting.

Well, here is the latest version.
https://drive.google.com/file/d/0Bz-xWb8DoT3bSmxxUGl1ZmtjaHM/edit?usp=sharing
(version 0.11)

Changelist --- https://github.com/ClockworkHounds/PretenderBalanceMod/blob/master/changelist.txt

Please ignore the placeholder banner :o).

Edit: A new version is out for use in the new game, the only changes being the water ahura bugfix and Daeva of Wrath being less expensive (was 75 in vanilla game, is now 50, our original change was at 25). A super special thank you to goes to Tim ('scanner-in-my-face') for providing us with an actual banner.

You can download it at:
https://drive.google.com/file/d/0Bz-xWb8DoT3bblZ3ZTFwUzhBdnc/edit?usp=sharing

This version shows up as a separate mod, because autodownloading apparently still doesn't work and everyone who plays the ongoing games would have had to download it also, which would be chaos.

As a sidenote - if you tried to connect to the games roughly between 12:30 and 13:30 GMT+1 then you might need to redownload version 0.11 again, because Dominions 4 is quite trigger happy with erasing local files it doesn't like.

After one downloads and saves the files then what does one do with the folder and the .DM file to use it online

I did a thread about that a while ago:

http://gtm.steamproxy.vip/app/259060/discussions/0/624075566819238506/

thanks for your help

Enchanced Magic got an Update

Some spell rebalancing: Stars are Right, Whispers of Rlyeh, Summon Nether Things, Reach through Aeons, Bonfire of the Damned, Ally from the Banefires, Guidance of the Gods, Heatwave, Secrets of the Numina, Gates of Death, Soul Gate, Conversion, Hydra Hatching, Hydra Brood, Create Demonbred, Spider Sight, Sticks to Snakes, Serpent Curse, Snakebite, Summon Sacred Serpents, Mists of the Blessed Isle, Spreading Miasma, Hidden under Mounds, Hidden in Barrows, Hidden in Tombs
Most National Artifacts reduced in cost
Made Titanic Beasts magicbeings to prevent Transfer Mind shenanigans
Fixed Shoggoths so they actually grow
Fixed Mental Overload for EA Rlyeh
Fixed Stars are Right for MA Rlyeh
Added Shining Trapezohedron for LA Rlyeh
Power of the Void castable underwater
Commanders no longer transform into Werewolves underwater
Added flying ants to Rise of the Insects
MA C'tis summons no longer suffer from miasma
Nether Things stats reduced, death gaze aoe 5 > 3 ammo 10 > 5
Fixed Redcaps after patch changes
Added more national items - Heart of Ice, Staff of Magma, Lituus, Muthi, Morgen Crystal, Spectral Gladius, Thaumaturg's Tome
Added Werewolf Lord
Added Mechanical Giant and Monster
Added spells Exhaustion, Meteor, Meditation, Celerity, Horde of Scorpions, Flight of Wyverns, Tribe of Yetis, Stone Awakening, Swamp Spawning, Mechanical Army
Added Reach through Dimensions based on sprites and ideas by amuys
Added national summons for the Monkey nations based on sprites by amuys - Preta, Garuda, Asura, Asurendra
Added national spells for Xibalba
Added national spells for Lemuria
Added national spells for Ys
Added Awoken Iron Dragon

https://drive.google.com/file/d/0B-jNQgOwI-Q_bXZ2RkNKS1pkaDA/view 1.2