my 2 cents on this subject.. no one asked for it but i freely give it. 
The lack of mods is mainly due to a few core issues.
Granted I haven't messed with modding elemental very much.. but from what I can see.. (anyone more experienced in modding elemental feel free to correct me if i'm wrong in any or all of the points)
1. limitations
The majority of things we can mod in game dynamics at this point are rather limited xml values. nothing wrong with XML but its all dependent on what options are coded into xml files.
2. ease of modding
this sort of ties into the limitations issue.
Alot of the dynamics we can mod at this point are so easy to do I personally wouldn't see a point in releasing it for others. For instance i tend to mod the game speeds so that on epic speed research takes a bit longer... but its so easy to do (1 xml value) that I figure anyone could do it themselves so why release such a simple xml change?
3. massive game changing patches
especially going from 1.09 to 1.1 there were massive changes in the game that made many people put off modding since they would just have to rewrite/redo the mod for 1.1
my conclusion
I'm pretty interested to see what direction the modding capabilities take.. but as it is now any mod ideas I may want to do are either so easy anyone could do it or far beyond the modding options we have(as far as i can tell). But to be fair i'm what you might call a private modder.. I tend to make mods for my personal enjoyment and don't bother releasing them to the public.