Building this set, I realized a new strength of the external tile set over the former edge tiles. The 0.5 versions of the tile can be glued separately from other parts on the cut stone base. I've included some examples of how you can use this to make doorways for halls, but I expect this approach in the future will make external tiles super flexible for building all kinds of tile combinations. Want a corner with a door on one side and a window on the other? This approach means we can do that. I also noticed when I had this setting next to each other in my painting station before I added doors, lining these up next to each other with no door makes for a fairly nice colonnade.
Look at the page on thingiverse for some examples of me using this technique. You can also of course print the door tiles in a full range of sizes like normal. Don't forget that if you want to have the door open the other direction, just print it mirrored on the x axis.
Overall between this release and the external adapters from last release, I'm really starting to feel that the external tiles have a great amount of untapped flexibility. Look for more releases in the future to try and capitalize on that to make building special custom pieces for your board a matter of glue and clamps, not needing to learn blender.
Let me know what you think in the comments below.