Proof of concept. Need to save overrides in user database and create GUI for it. May be difficult to collect and apply considering the Item container is attached to the eve db and not the user.

eos/gamedata.py

@@ -183,6 +183,15 @@ class Item(EqBase):
                 attr.info = info
                 attr.value = val
                 self.__attributes[info.name] = attr
+        try:
+            self.__overrides = __import__('overrides.' + str(self.ID), fromlist=True)
+        except ImportError:
+            self.__overrides = None
+
+        if self.__overrides:
+            for key in dir(self.__overrides):
+                if key in self.__attributes:
+                    self.__attributes[key] = getattr(self.__overrides, key)
 
     @reconstructor
     def init(self):