Frontier doesn't want us storing cargo so we can't bulk up on millions of tons of common CG goods on Wednesday and completing 10 Tier CG's on Thursdays minutes after the new CG's start.
They also don't want us stockpiling UA's like nuclear weapons in the 60's, and shutting down CG's minutes after they go live either.
But perhaps if we ask nicely, in large enough numbers, they might meet us half-way, and allow temporary cargo storage so we can change ships, outfit or re-outfit them so we can then take our excess cargo when we're done.
I think this would be a simple enough method - consider:
I pull in to a station in my Type-6 with 80 tons of cargo in my hold. I stopped, because I'm tired of being harassed by pirates and want to switch over to something with some teeth. I happen to have a combat-ready Python stored here, but it only has 64 tons of cargo space on it, and presently I can't switch to it, as I have too much cargo.
Enter Compromise:
I can switch to this ship, with a notification: "Excess cargo has been stored, and will be sold if you disembark from this facility.", much like that bothersome "Don't forget to set your fire groups" message we get.
So I switch ships, but don't want to/can't give up my cargo, so I stop by Outfitting, swap a couple modules around, and now I have 96 tons of space in my python. My excess cargo is transferred back to my ship, and I'm on my way again.
Or, perhaps I can get by without my extra cargo, so I disembark, and just as I clear the mail slot, I get a message: "Cargo left at the station has been sold, for X" (Where X is the current market price of said cargo, minus a 10% charge for not having sold it myself before switching ships.)