I think both types of maps have their place. A lot of my maps end up as posters so I tend to go with the mindset of showcasing the games graphics and level layout. However I also enjoy looking at the edges of the maps that the programmers never intended people to see, and what areas they left partially complete, or filled with a pattern that does not match or line up since they figured no one would ever know.
I think this issue is kind of like the one for should enemy and item sprites be included on the maps? It really is just a matter or personal preference and what the intended use of the map is. There is no right or wrong answer.
Trop, I enjoy looking at your Super Castlevania IV Maps to see where the programmers stopped coding the graphics. However if I were going to make a poster of the level to hang on the wall as art I would prefer a more complete looking map. It really just depends on what the map is being used for.
