I don't see any benefit of storage and what wrong of turning in the cargo from a mission to do something else?
Here an easy fix for people who want Cargo storage because they want to do something else. Buy another Account. 3 Accounts work wonders. I can Explore or Combat or Trade whenever I want. I have no cargo issues.
We can also add Gold sellers dream idea.
Here an Alternet Idea from Misty_Dark
Quote below
I can get the wish to store guardian stuff, perhaps an alternative where we convert these to data instead, and then you could have them all present in your ship, and then go back and forth to fetch two different data to your SRV todo the guardian puzzles etc. Just for selling what would be the point to store them?
Thargoid stuff for storing was a bad idea back when you could cripple stations by selling these to the black market... so you can imagine how bad storing these stuff would have been. So what would be reason to store them today?
Storing mission cargo... an alternate solution for this could be to expand on the mission system to actually allow us to return mission to the quest giver, so this would allow you unload whole or part of the cargo, back to the original station. It could also partially solve the issue of CMDRs that just load up a big ship with lots of mission cargo that is destined to outposts, where a large ships cannot land... it would not solve the issue of them having to fly back to their original station... but I do not see that as a huge issue, as the CMDR messed up in the first place... This would also help in the change to do some combat and and then back to mission cargo hauling, as you would be able to store the mission cargo in the mission. This sort of assumes you picked the mission from the same station where your combat ship is stored...
For switching ships, an option to change the loadout of a stored ship would come a long way to solve this issue, as long as you change to a ship that can be outfitted to store the cargo. so switching from a 750+T Type 9 to a smaller ships would not work,
I do not see any real use for be able to store cargo at a station, as in most cases there are options available, and a few tweaks to the mission system, would fix most of the arguments for storing mission cargo.
Second Post
So what is the difference if you can unload the cargo at the originating station as a temporary solution to switch ships etc? you still have the mission, and it is still running, regardless if you actually have the cargo in your hold or not... This would just be a small extension to how the wing version of cargo missions works, as opposed to how the old single style missions works where it refused to let you accept the mission if you could not load the mission directly onto your ship, wing missions, do not automatically load your ship, and that of course have had its fair share of CMDRs that accepted mission, flew away and forgot to load the cargo.. So having that same mechanics for solo missions would allow CMDRs to accept missions in ships that cannot hold the cargo, and also do part deliveries of a bigger haul, and with a small adjustment that you would also be able to unload the mission cargo you have already loaded back to the originating station would not make to much change.
This would not change the game in a significant way, it would instead make things behave the same regardless if it is solo cargo mission or a wing cargo mission, and the only difference here would be how many players can participate in completing the mission. And the only change would be the option to actually return cargo, and that is probably just a minor change to the current behaviour we have in Wing cargo mission. And like I have already posted, if a CMDR wants to utilize this option, it has to be at the originating station... so it still requires some commitment from the player, and they still have to remember to complete the mission later.
This would also allow you to lucrative accept cargo mission in any ship, and then return with a suitable ship to comple the mission, and if you forget about it, the mission will fail with the normal result of failing to deliver the cargo on time.
As for your "garage" example, we know the cargo is tagged, if you loose some cargo to piracy, you cannot simply go to the market and buy some replacement cargo of the same sort, so you can think of this as the cargo is tagged and sealed in place, now you cannot access the cargo without breaking the seal. which they will know, so you cannot simply unload the cargo into your garage... This is how we have arranged transportation of gods that is not allowed to be tampered with during transport, we seal every door to the cargo hold of a truck, and we verify the seals upon arrival... so that is how I like to think how the mission cargo works in Elite... you are not allowed to remove cargo that have been loaded onto your ship, only the mission giver or recipient is allowed to do that.