Much like sending your active companion off to sell junk items, I think it would be nice if we could send our active companion off to access our cargo bay. I had a couple of thoughts as to how this would work, but the one I think that works the best is this.
When a player right clicks on their active companion's portrait, they would see the options to dismiss, sell junk items, or access cargo bay. If the player chooses access cargo bay, their inventory is shown in a special window that tells the player how much available space they have in their cargo bay as well as a special function labeled "Send to Cargo Bay" that would work essentially like the Reverse Engineer function in the sense that once activated, the player right clicks on any item they want sent to their cargo bay. Those items will then be highlighted to signify that they have been selected. Right clicking a highlighted item will deselect it. Once finished, the player would close the window via a "Finished" button. If the player changes their mind and would not like to send their companion away, a "Cancel" button can be clicked to cancel the whole process. Assuming the player has selected "Finish," all the items they selected are removed from their inventory and their active companion is dispatched. A 3 minute countdown timer will begin, at the end of which their companion will arrive at the cargo bay and the player will be notified via a small popup window stating "Your companion has arrived at your cargo bay". This small notification box will only have one option, "Confirm."
Once the player acknowledges that their companion has arrived, another special inventory will pop up listing everything that is in their cargo bay as well as tell the player how many empty slots they have in their on-character inventory. Like the earlier special inventory window for sending items to the cargo bay, this window will have the same marking function. The player can then mark any and all items that they want returned to them. Once finished, they can click "Done" and their companion will begin the trip back, beginning another 3 minute countdown timer. Once the countdown reaches zero, the companion returns to the player and any items that the player had marked to be removed from the cargo bay will be added to their inventory.