7. The Future Isn't Perfect
This goes against everything that Roddenberry suggested, but has to be done in a modern television series. No one expects everyone to get along all of the time anymore it is an ideal from the 1960s that is in the same realm as silver outfits and flying saucers. Viewers will expect certain characters not to get along with each other. They don't have to be along racial lines (such as Vulcans and Andorians in Enterprise) and should simply be certain relationships don't work (Chakotay and Paris at points springs to mind). I mentioned Battlestar Galactica before; that concept was developed by Ronald D. Moore and you can see how this followed on from the established relationships that Moore worked on during his time on Deep Space Nine. A new show must embrace this type of concept, as it leads to further possibilities and angles for the writers, a more interesting experience for the viewer and a happier main cast who will feel that their characters are fully fleshed out.