First off, Hi, I'm new to minetest and the forums, and here is a string of suggestions for it.
1) I dont think that the name "minetest" would approach too many people if the game gets big, I really think the devs or the community should devise a new name for Minetest.
2)I think that Minetest should approach a more wilderness, survival, industralized version of Minecraft featuring hunger, thirst, tiredness, and some primitive technology like muskets, bigger-than-one block giant ovens that burn forever in which you can just throw iron ore and stuff in without needing fuel (of course it would be very expensieve to make), etc..