2. A More Diverse Crew
One thing that has long bugged diehard Trek fans is the sameness of many crews in Star Trek. Many of them are filled with the same kinds of people same jobs, same ranks, and same species and most of them think the same way. Some of that is understandable most of the people in the main casts of Trek shows are Starfleet officers or equivalent military personnel, so theyd act in similar ways on a lot of things. But it is extremely odd that aside from Klingons, Bajorans, and Vulcans, everyone in the Federation more or less behaves the same way as Starfleet officers from Earth and that most crews are human (which gets pointed out by the Klingons in Star Trek VI: The Undiscovered Country). A crew with some of the less featured aliens (or even a non-Starfleet crew) means more opportunities for unique stories that can make a new show standout in the franchise. Seeing other species perspectives and comparing them to Trek humans (and out own) is part of the fun of Trek. Some of the best conflicts in storytelling are the ones that come from people having opposing viewpoints on the same issues and with an alien heavy cast, thered be a lot of viewpoints to use. There can even be conflict between human crew members and their views if Roddenberrys Box is opened up a bit. What matters most is creating a rich vein of storytelling gold that can be tapped over a (hopefully) long series and having a diverse set of tools at hand makes it easier.