Offtopic:

Dat kewlbro.
Ontopic:
I wonder if this game will ever get its own online ads like blockland :o
Anyways. I have a couple moar ideas.
-Fertilizer - makes plants that it's used on grow faster
-Honor - You get larger rewards for killing while at war but not killing while nations are at peace.
-Tutorial - By this i meant an actual play-through tutorial, if you don't complete an action you can't play because you'd be a noob