Some Pros and Cons to door bricks.
Pros:
-Far easier to render a door brick than a JVS door. Meaning you can have a lot more on screen at the same time.
-Door bricks have a collision when open.
-Slightly enhanced realism. You have to click the door itself to close it, instead of it closing on its own.
-Can be Trans and FX painted. Chrome door, glowing door, glass/crystal door, jello door, etc.
-Doesn't use up any events to work. (Can't get stuck or broken. No event knowledge required to make it work)
Cons:
-Can't be linked to switches via events (at least currently. who knows if someone can introduce new events or something later)
-Harder to make a blb than a dts. You won't be seeing a large pack anytime soon.
-No swinging animation. (though it might be possible to add a 3rd, diagonal 'in between' door that exists momentarily)