Nice thread, guys! I am currently working on this, myself. I think I am going with modules: Food unit, survival unit, snivel unit, weapons unit Something like that.
Modularization can be good, just make sure you disburse your modules throughout your gear so you don't get totally screwed by not having a module. For example, many smaller modules of fire starting gear, food, water are better than having all of fire starting gear, food or water in one container because if you loose it or need to ditch it, you lose the value of the entire module. Hopefully, I am not being to confusing here.