A good aspect, but that should me used more times

[JohnVyttalRay]

Well, while playing in concrete man and galaxy man's maps, I noticed that there is the "boss door" a very good aspect, it gives a mega man feeling, that's nice, I've also noticed that there's the same thing in Bomb Man's stage, and in the ground, that means exactly like in his level, where's the "checkponit rooms" has vertical falls, that's great, like, I didn't noticed it for myself, when I saw the door I remember about the fall and the vertical room. But this isn't in all the maps, to be true, just in few maybe less than "10%" (this if I'm right, because I'm really blind), it would be very cool to see those "doors" in all the maps

     

[fortegigasgospel]

Fun fact about Galaxy's boss room doors, it was actually an "Air lock" and the rooms were originally going to look like storage rooms, I kept them cause it added some visual detail to the wall and made it look more like a space station by actually having an entrance, also if you noclip to the outside of the map you will see the doors on the outside of the facility too.

[JohnVyttalRay]

So it isn't a boss battle door, it's just to people there just don't get flying out there and go to the space? lol, I swore it was a boss door, and I think very much people will think that because of bomb and concrete man's boss door, but still, it's a good idea, in jewel man there's another use of the boss doors without being to "lead" you to a boss, it's for a mine vehicle

[Rozark]

Boss doors are generally used for the average door texture in the game. Big surprise, I know.
Some of the more creative uses come from people using them as actual boss doors, which you've seen in Bomb and Concrete.

[JohnVyttalRay]

Kinda shocking