I liked Last of Us, it was good, well paced, and nobodies actions felt contrived or forced.
As for episodes? Star Trek TNG did 178 episodes in 7 years back to back with no break. At a cost of 3.5 Million per episode adjusted for today's dollar. But the era of 24 episodes per season is done with, and that make some sad because you can tell a huge story in 24 episodes with time for good character development. I'm re-watching Babylon 5 and its great how each of the main cast has room to breathe and grow, plots don't have to suddenly spring out of nowhere and get closed just as fast.