I've not yet decided on adding the padding to this door or not - I may save that for another door, as I have 5 buildings in the works - either under actual construction or design/part-accumulation. I'm drawing a lot of my inspiration from the Battlefront game, and their doors are about 50/50 as far as with or without padding goes. And, if I do, it will likely be more "inspired by" rather than "screen-accurate." I'm thinking these are going to find a home in my Fixer-verse.
(Interestingly, I may have found a part that will serve well as a Command Post marker I can recast for my dream of a game-map-accurate Mos Eisley...)
One thing I can say so far is using a clear sealant on the "Red Tower" surfaces has worked out well. It's a matte sealer I got at Hobby Lobby and it seems to be making the spackling compound much more abrasion-resistant.
I do have a plaster & glue bldg - 2 stacked cubes, a la CP2 - that is underway. I got carried away and forgot to carve out windows or doorways on it, tho ... oops!
Another experiment coming soon(-ish) is mixing paint into the spackling compound, to better hide any chipping.