Now that the general idea of localized damages, armors and damage types is out, I will dig into this a bit more in the next version.
I definitively need to implement splash damages and thrown weapons (grenades, molotovs). With this, I need to add optional graphics for special effects and allow them to be linked to a specific tile. With that, cool weapons that cause tiles to catch fire (molotov, rpg launcher), dealing small continuous damages on whoever is on it, should be relatively easy to implement.
Also, effects still need to be implemented on armors, and I would like to add a "body" editor. Allowing to give specific body parts to a NPC template. It should allow to add innate protection damage to each body part, specific critical/wounded effects, and set if a part going to 0 health leads to death or not. This editor isn't a top priority, and it may be wiser for me to wait a bit to see what are the features I really want to be easily moddable about it.
This done (+ fixes for the few bugs found in the 0.3.8) and we should be ready to start implementing a mission framework, dialogs and this kind of things.