I
love the idea, but I really think this would just be too heavy under the hood for implementation any time in the near future. It could be a possibility to add decorations similar to how containers currently work, but you'd still be limited to only being able to remove what you put down.
Consider that the static items you're wanting to remove are built into the map. Now, a few options exist. Remove all the decorations there and force everyone to decorate. The problem with this, is this would certainly effect certain containers that were in use. You can't really put out a bulletin saying, "Hey, we're deleting every container/item in your room/base that you yourself didn't put down," and burden the player to figure out and be sure that their items are safe. So no ninja removing items from the map. If only you could cut & paste the coding behind the containers, but I'm sure that would be quite an investment as the simple fact would be a lot of new code would have to be written to supplement what's already there.
I wouldn't mind seeing more customization options in the future, but really I think it should have it's limitations. First thing I'd see happening would be people living in rooms without beds. Do you need a bed? No. Does your character? I guess that depends on your preference, but I just don't see big enough of an effect on gameplay to rationalize it. I like the idea of a trash can, but what such items would benefit from such a thing? I feel like the 'Drop All' command is already a major time saver in organization. So long as you already have 1 of an item in there, it'll go exactly where it's supposed to go. It's easier to pull a few handfuls here into this container and a few to that followed by a mass drop into the Footlocker I've come to joyfully call the miscellaneous bin.
Again, a great suggestion, but it'd be well behind balancing and adding new features. That said, expressing interest is the best way to drive attention somewhere and I'd wanted to Science away the containers that came in my room myself initially as well, so trust me I understand.