Well, you can't make Normal easier without gimping the player, but you can make Easy harder to bridge the gap between the two difficulty settings. That is what I did in the linked file which replaces the file Assets/GameCore/DefaultPlayerAI.xml

https://drive.google.com/file/d/0B3COOirjZWXLTXdZNHlqMW9ITE0/view?usp=sharing

Make a backup of the original file first, please. Then replace the file with the one above, start the game, and start a match against the Easy AI.

The tweaks to Easy are in between the stock Easy and Normal, so this should be for the folks who can beat the Easy AI, but are having trouble with the Normal AI. I'm sure by release Stardock/Oxide will balance the difficulties so Normal isn't so hard.

P.S. I couldn't add a new difficulty setting to the list because doing so would require tweaking the UI, which I do not yet know how to do. This will work until then.