Now that Create 0.6 adds packages, I think it would be really fun to have a special shell that could be filled with a package instead of a fuze and would release the package as an entity when it hits a block without much block or entity damage. Would allow for some cool mass-driver type logistics systems for transporting items to far away locations, or resupplying your troops on the front lines.

Container shells have generally been not considered due to the potential for chunkbans. However, I may consider mitigation strategies, so I will leave this up and tag it. No guarantees on implementation.