According to the most recent comments I've heard, star clusters are going to become like the Defari system with "known locations, known people that you can go help, daily missions". I have 2 concerns with this: first of all, thats not really exploration. Second, what happens when you play through those missions? Do you have nothing new to explore until new ones are added?
The details discussed above are from this interview, 13 mins in:
http://www.trekradio.net/news/dan-st...w-in-on-demand
Have a listen and then share your thoughts.