I'm never played in Minecraft. But I'm played in Minetest
So, I'm thinkt that my visions can be valuable in making a Minetest different of Minecraft
First: I'm think that should be a mechanism like in dwarf fortres: a different types of stone, metal, etc with different values.
Second: because this would be difficult to program a hundres of kinds in Minetest by devs so should be mechanism of XML files with definitions of planst, mobs, etc (like a DF but DF has a own format)
Third: maybe a need of eating?
Four: a commodities should be in "clusters"
Five: maybe different climatezones?
Six: 4 & 5 made a betwen players trade more interesting
Seven: maybe a kind of steampunk like technology? or magic.
What do you think about all it?