The Klingons are a necessary evil, no pun intended. BUT they need to be done in a way they never have been before. The best way to represent them in a long-form story where there's time to develop them is to have them mirror 21st century humanity. Not just the Russians or Red China as they were originally fashioned, but all of humanity, good and bad in all its variations of culture, politics, art and music. And they should vary in appearance as much as humans do as well. They are an entire species, not a race or 2.
I originally wanted the smooth and bumpy so they could show prejudice and subjugation of one over the other, but I now feel that's too simplified and it's too much of an outdated device to simplify other (alien) cultures so much. Viewers are more sophisticated these days (despite what Hollywood thinks) and the world-building of other species needs to be more believable. And again, this is more of a novel for TV, not a procedural where simplification is necessary.
Obviously they can't hit us with all of their complexities at once, but I'm hoping they'll make a real attempt to un-simplify the Klingons and lay the groundwork for a more complex species. Ditto for the rest of the aliens, and especially any new species they introduce.
So for those who say enough of the Klingons, I agree that we've seen enough of the Klingons as they have been portrayed to date. But given the difficulty of world-building and developing an alien species and its various cultures, etc, we need established aliens so that they can be updated more quickly and hit the ground running, while they introduce new alien species that might take longer to catch on.