I love Star Trek. My favourite series are The Next Generation, Deep Space Nine, and Voyager. The Original Series was OK, but before my time, and Enterprise was wank.
But the producers need to learn from their mistakes, and from past glories, to make this new series great:
- An intriguing enemy
TNG had the Borg. DS9 had the Dominion. Both were arch-enemies, bent on the Federation's destruction, though they had their quirks. The Borg were a hive-mind, while the Dominion were out for widespread vengeance on any humanoid species, in retaliation for past oppression.
But the new show needs an enemy that is out for the Federation's destruction and has its own idiosyncrasies. The Borg worked since there was no leader, for a time. They added the Borg Queen in First Contact, but then we she was kind of their leader. The Dominion had slave races (the Vorta and Jem 'Hadar) to do their bidding for them, while they planned and executed everything.
The new enemy shouldn't be a rehased one, like Voyager had since it featured the Borg a lot too. Or ambiguous like the Suliban in Enterprise.
- Cool characters
TNG and DS9 had Worf. TNG had Picard and Data. DS9 had Sisko and Odo. TOS had Spock. Voyager had Tuvok and Seven. It needs believable and relatable characters, like all the other shows had. Sisko was a single father, and his son was essentially an "army brat". Picard devoted so much to his career that he never had kids. Worf was torn between the Klingon Empire and the Federation due to being orphaned from his Klingon family and being rescued by a Federation ship. Odo was an estranged Changeling, who reviled at the fact that his people ran the Dominion, the Federation's arch-enemy in DS9. Even then, he still loved them.
So the characters need to be well-developed, and well-written, with points that can make them believable and real. I doubt there has ever been a character in all shows that somebody out there cannot relate with on some level. This new show must continue that trend.