Best Of

Another good replacement option, would be a natural Latex foam, which does not break down over time like petroleum based foams do, which eventually break down into small bits.  Also layering a firm foam base with a softer foam piece on top would I,prove the sitting and sleep comfort, adding better overall support.
 Cheers 

In 2019 the bungee cords were replaced with two "pockets" and the round window became a vertical "slit' window.
I agree with the (lack of) utility of the trash can.  I have tried to think of something that could be stored there since it isn't going to cut it as a trash can.  Unfortunately it is too deep to stow small things and too fragile to stow heavy things.  In addition, that trash can can, and will, pop off of the clips holding it to the door with even a small bump.
For trash I use a plastic Walmart bag hanging on a hook to the right of the door.  Not all that convenient but better than the can on the door.
In my professional opinion, and with vast experience, I have decided that Walmart bags are the best bags out there.  Grocery store bags and other bags are too thin and tear easily.  Since I also use them when scooping the cat's litter box, not tearing is important.

Im sure that inside plastic panel is a seperate part that can be switched out.  Check with your dealer. By the way though,  I have not found the trash bin to be usable. No way to really use a trash bag in it without it sticking out all around the top and the bag falling inside when putting trash in.  I tried hard at first to use it but I think alot of people just ignore that and do something else for trash. Nice concept but not functional in my opinion.