Many of the weapons and armors can be modded, the one thing it seems left out is the fusion core. Would be nice to have a way to mod fusion cores just like we do the guns where we can have 10 of the same gun but one is modded. For a game with alot of modifications for armor and weapons, it would be nice to be able to modify the fuel core for AP bonuses, HP bonuses to absorb damage or just last longer for strolling around in the wasteland.