How many redshirts and crew members died on TOS over the entire series? I bet the ratio is much worse compared to TNG.
Well, here you go:
In the first season (not counting the pilots), redshirts only account for about 1/3 of the fatalities. It wasn't until season 2 that they became the primary cannon fodder.
Not counting the pilots, the onscreen death toll would appear to be 45 people out of 430 crew, while in TNG it's 68 out of a bit more than 1000. So yeah, that's a significantly worse ratio.