Stored moduels at 120 might seem a lot, but if you hoard certain things, like a complete collection of powerplay weapons, (guilty as charged), then it soon evaporates. Even working not at the edges of the 120 module limit, its not the easiest to see what modules you actually have in storage, I'd love it it I could use the outfitting shop interface to browse my stored modules. Think about it, using the module shop outfitting interface to peruse your stored modules would allow the player to see for example which shield generators they had in stock, without having to scroll through over a hundred items ranging from bulkheads to heatsinks to limpet controllers to all manner of weapons and such like.