Star Systems in the Frontier

I have a problem with the number of star systems in the Frontier.  The map of the Frontier is about 60 or so light years across, and 40 or so deep (and doesn't take into account any extra dimensions, i.e. it only shows systems on an x/y axis, but no z axis, as a three-dimensional grid would), with Prenglar roughly in the center.  This means that most systems are within 30 ly of Prenglar.  A quick check of stars near Sol (our own Sun) shows many more stars within this same range; hundreds of stars, in fact.  While it is true that many of these real stars are unlikely to support habitable worlds, there may still be reasons to place bases and outposts on such worlds.  The number of Frontier systems just isn't anywhere near enough.  What do you think?