So what goes on those equipment cards?
Ideally every darn thing you can squeeze on them but depending on the rules the utility may be variable. for weapons we have damage rating, encumbrance and range if applicable; if your game has weapon vs AC mods should this go on the card? Should notes that vary the weapons effectiveness in situations and tactics be included? Item value? Item AC and HP if your system uses them? Should all items have saving throws listed?
In an ideal world I'd want a lot of that on a weapons equipment card but in an ideal world no one would expect me to scribble it all down for Lord Dark, his 3 Leutenatns of Looming doom and their faceless squad of dungeon guardians on a useable set of cards... oh whait, they should if we are using equipment cards.
hmmm... still more to ponder.