...and TNG's universe was large enough to have 31 episodes featuring the Klingons out of 176 (18%)...
I think this is a bit of a misrepresentation. With Worf, there was a Klingon presence in all 178 episodes (100%). Same with Voyager and Torres, and DS9 with 100 episodes with Worf.
Personally, I'm not thrilled with more Klingons. They've been beaten to death as a species across the modern shows. Maybe Discovery finds a new angle, maybe not. We won't know until the show airs. Though the whole sensor-ridge thing just screams of Vulcan nasal numbing all over again.