Well I decided to point out a few things and make some suggestions for mod developers. Pretty simple really.
I suggest packaging in either zip or 7z. The reason for suggesting zip is all operating systems should be able to unpack it by default. I suggest 7z because it compresses very well.
Also I think all mods need to include a VERSION file containing the version of it as well as changes. I need to do same with my mods. I've noticed it rather hard to tell what version one has installed.
Also all devs of mods need to get together and work out a standard packaging theme for consistency. Right now it could be rather confusing to someone fairly new to minetest and modding to download and install a mod.
A mod repo is a good idea as well. A mod package manager that is cross platform that works would also be good. Preferably with a GUI and dependency checking. Anyone with the capability of offering a central long term repository for mod packages that can be accessed via browser and potential future package manager?
I also suggest creating screenshots of crafting recipes. The way
Mesecons post is laid out is rather nice in this respect. However I'd suggest more space between screenshots so users don't get confused which text description goes to which screenshot.
"Before you speak, ask yourself: Is it kind, is it true, is it necessary, does it improve upon the silence?"
My mods:
http://goo.gl/n4kpn(Currently Various, Industrial, Fakeblocks, Jail, MoarCraft, Christmas, Replicator, minetest dev installer for linux, bash mod installer, windows mod installer)