At one end of the environment, they could include the console that Vader uses the Force on to initiate the Carbon Freezing process when Luke falls into the chamber.
I have always thought that SSC should make more small environments similar to the "Reactor Station Alpha" one that they released. I have that one and wish I had gotten at least one more to use with other figures. It's generic enough that they don't have to label it as "Star Wars" but it can easily be used with them and also be used for other figures you might have.
They should make a generic Death Star wall piece that they could keep the price low on, so if you wanted to get multiples and display them side by side you could kinda have a DS hallway. I doubt SSC would do it but maybe some other company, like Scale Store or somebody, could do something similar.
Maybe something like these.
