
Quality of Life: Enable production buildings to house more of the small-stack items if the player tries to manually force them in with ctrl+click and similar methods.
Long version:
For items that stack to 100, an assembler and other machines can generally accept extras of such items if too much ends up in the players inventory for some reason, providing a convenient way for the items to rejoin the production loop without feeling like they are being wasted.
For items that stack to 10, such as the fullerene structures, they might fill up the input slot already at 33 housed, meaning that if the player tries to input more it isn’t possible and the only way for them to put the items back into the cycle is to manually place them one by one in specifically the producing structure or placing one or several cargo bays feeding into the cycle and hoping they don’t forget to remove them later.