Yeah. But stating it as absolute fact re "Globular clusters dont support life" rubs me the wrong way. That is your position. Others have differing positions (http://www.space.com/31535-advanced-alien-civilizations-globular-clusters.html).
Even if we did assume that globular clusters are lifeless, they would still add interest to a map. I envision a map area that is much larger than it is currently (but with the same star counts), with a scaled down spiral galaxy in the center, a couple dwarf galaxies near the periphery, and some scattered globular clusters between, linked very sparingly by natural wormholes (or whatever). The result would be something akin to islands and continents in space that still make some scientific sense. I like the idea of the clusters being dead-ends in the natural wormhole network, a wall against which you can put your back during a savage fight, or the lairs of exotic space monsters (akin to void clouds etc) which might naturally prefer such an environment, or some other form of goody hut. You could do a lot with them.
Sorry that science rubs you the wrong way but it is highly, highly, HIGHLY unlikely that life exists in globular clusters. Posting an article by two scientist with just an idea, doesnt make globular clusters habitable. I will say that they could certainly enhance the visual of the galaxy though.