I’m not sure if you’re just being a troll or serious with this. A 1 hour episode isn’t just 2 30 minute episodes put together. Each episode has a full story arc, theme, lesson, etc. you couldnt have the first half of your 50 min episode be a sherlock holmes episode then the second half be a normal episode focused on the story. Also the artists aren’t making the decision how many episodes netflix will buy.