I have recently added the 'Improvement Mod' on the biggest modding website and community, moddb.
For those who don't know, AoE3 Heaven Games, while being the first and primary website where I upload the mod, it is not the only place where you can find it. I have also uploaded it on other big modding websites, like Strategy Informer and File Planet.
Here are the links:
I do update those less than i update the one on AoE3 Heaven, but i gave links so people can stay up to date with the versions by checking the one from the primary website.
The mod might be uploaded in other places which i don't know by people i don't know about, but i am totally OK with it, as long as they know who made it!:)