Kinda of an interesting idea I had.
Lots and lots of items tend to slow down a fort pretty rapidly and look bad. To some extent, one can clean up rock by dumping it into a quantum stockpile, but these items are still in the game (just compressed into one tile) so they are still kept track of by the game, and have effects like causing a loooooong lag if you dare highlight the stone screen under stocks.
There is a new building called the Rock Depot. It could be five by five. The rock depot would have a couple of commands.
1) Make rock pallet
A dwarf with stone hauling would drag 5 (or whatever) stones of the same type to the Rock Depot, where they would be replaced by a [stone] pallet. Five chunks of Microline = 1 Microline Pallet. This Pallet would then count as a single item in the game (possibly with its own sub-menu under stocks)
2) Break down pallet
Pallets wouldn't be good for anything other then storage, so to get the stone back, one would have this task, which would split the nearest pallet back into five rocks. It'd be nice if there was some sort way to choose which pallet was broken down (with something like the melt command or a format like the jeweler's shop maybe).
If it works, one could decrease the number of object in a fort (and it should work the same with any object that lack quality levels, like Microline blocks) without resorting to an exploit like quantum stock piling or atom smashing. The rocks would also be recoverable.