Thanks for the updates DEV team! These are great insights to your world and the world you are creating.
RE: doors.
Trapdoors? either up or down.
Mechanical traps on doors (both remove and place) Option: Can a rogue recover the trap components say if a critical success is rolled?
Magical traps. (both remove and place)
Ability to unlock and lock door - based on skill, magic
Bash doors
Barricade broken door? Blocking/barring with items in room (last one may be more difficult)
Listen at doors - based on skill/race - to hear if enemies are near or info on quest(s) etc.
Magic barring of door with no lock (similar to Hold portal spell)
Doorways have always been a good choke-point for and against player character parties. I hope the path-finding works so one can try and hold the enemies off.
Also, based on size of opponent.
A party of man-sized or smaller characters would have a hard time holding a doorway against giants or other large beings. Same for very small enemies, creatures a few feet tall would have a chance to slip through the front enemy ranks. Perhaps an option would be a free attack on them as they try to slip by.