FOSS gamedev and creative worlds

This mod aim to add a complex hi-tech armor, with lots of modules to install and customize, here I write some details about what I'm doing and what I do from now on.

Mod version: 0.1
Minetest version: 0.4.13
Licence: LGPL 2.1 or later

Color Legend:
Red -> To do
Blue -> Incomplete
Green -> Completed

Nodes:
Raw Crystal -> Completed (this is the basic node for the crafting material.)
Worktable -> Incomplete (using this you can customize all the modules of every part of the armor.)

Crafting Material:
Crystal -> Completed (it's necessary to craft the armor and the worktable.)

The armor is divided in 5 pieces, here I list them with their modules:
Helmet: Battery, Photovoltaic Generator
Torso: Battery, Heat Generator
Legs: Battery, Kinetic Generator
Boots: Battery
Hand: Battery

Crafting guide:
C -> Crystal
S -> Steel Ingot (the default one)
G -> Gold Ingot (the defaul one)
X -> Empty space (used to align better the crafting grid)

Worktable:
[S G S]
[G C G]
[S G S]

Helmet:
[S C S]
[S X S]
[S X S]

Torso:
[S X S]
[S S S]
[S C S]

Legs:
[S C S]
[C X C]
[S X S]

Boots:
[S X S]
[C X C]
[S X S]

Hand(This works in every horizontal line!):
[S]
[C]
[S]

Depends:
default
3d_armor

Maybe you could make a ricochet outer coating which makes attacks on you become directed to players next to you.

Some possible ideas your mod:

Zero Fall Damage for the boots
Speed Boost and Step Assist for the legs
Water Breathing for the helmet
A Multi-Tool for the hands

And some kind of charging station for all parts

Thanks a lot of the ideas!
Right now, being new on Lua, I have a few problems on iterfacing my mod with the 3D_armor, but I could soon be able to fix all the problems.