Here is a list of mods that will give more freedom to Supreme Commander FA, with adding new units and upgrades. The Diamand Patch Mod stands out, everyone should have that mod. It fixes a lot of errors in codes, or beams missing, or missiles that don't caculate their path correctly, and a lot of other things. It's a must have!
We'll start with Blackops Unleashed V6.0http://forums.gaspowered.com/viewtopic.php?t=31172
This mod adds lots of new units, and mainly pretty good balanced.
Next is the Advanced Command Units Modhttp://forums.gaspowered.com/viewtopic.php?t=35265
This mod makes the commander, once upgraded, a challenging foe instead of just an over exploding t3 unit late game.
Here we have the Blackops Special Weapons & Naval Balance Modhttp://forums.gaspowered.com/viewtopic.php?t=40574
Adding even more units, for us to destroy, with boats which are now more properly balanced.
-- REQUIRED FOR OTHER MODS --
Now comes the Global Icon Support Modhttp://forums.gaspowered.com/viewtopic.php?t=36996
This is a mod that is required for many other mods, without this mod some mods may not work or can cause the game to crash.
As a Diamand above all, the Diamand Patch Mod!http://forums.gaspowered.com/viewtopic.php?t=36996
This mod is a must have for anyone, it doesn't add any new units or new features, it just fixes things. Know that issue when using Seraphin bombers to bomb that pesky commander but on the first run they all miss? Well, things like that will be fixed. You can see the full list at the link.
We have Supreme Commanders, now we have Supreme Shieldshttp://www.mediafire.com/?9xq47tbyhtjk5dg
This mod will add experimental Shield Generators, which will, obviously, generate enourmes shields which can take quite a punch. I've modified this mod myself, due to balance issues which are now practically gone. Simply place this file in your GameData folder in your Supreme Commander Forged Alliance folder and it's installed.
Last but certainly not least, Sorian Ai'shttp://code.google.com/p/sorian-ai-mod/downloads/list
This is a mod that makes the lobby better, adds new ai's which interact better and simply are better. Besides of the AI being better, they also cause less lag then regular AI's, increasing your gameplay.
Another mod that I really like to use is Mo storage.http://code.google.com/p/ghaleons-mod-collection/downloads/detail?name=Mo%20Storage%20-%20by%20Lurkily.zip&can=2&q=
This mod allows you to upgrade your t1 storages to store more, and have a higher help bonus. It's great.
Here is a list of a couple of more mods:http://code.google.com/p/ghaleons-mod-collection/downloads/list
This is just a short list of all the mods which are available. I donot take credit for any mod. Do you know any amazing mod? Tell all of us about it and give us a download link!