Today it is possible to move any amount of cargo with a ship A directly from B to C, regardless of the hangar capacity of A. B can be a wreck or container and C another container or a fleet hangar.
This obscure mechanic has little use, except it makes looting yellow wrecks in highsec 100% safe. A disposable Velator can for example move 60000m3 of “yellow” loot into the hangar of a waiting DST with one drag&drop operation. Same with even bigger loads using ejected freight containers.
This mechanic used in conjunction with loot theft has no suitable counter-play.
Proposal, forbid the direct transport from B to C by A but only allow B->A and A->C. Hence it’s a two step process and takes the cargo space of A into account as it should be.
The alternative to pass on suspect status for C instead of A is IMO too punishing for suicide ganks, also it doesn’t account for C being another container.