Hi Chimp.
If your idea is to do something that is similar to Film Riot I would say that it is not about how helpful the tutorial is.
Quite frankly I've seen amazing tutorials on Youtube with A LOT of information and they get almost no views. The reason why Film Riot has so much views is because it is fun . It is fun to watch. He doesn't only make sketches that could be fun , but he combines techniques from directors that we grow up with and he puts them into comedy sketches and that's what makes him great .
He interests people who aren't into filmmaking to watch his videos , I've watched him for over a year without understanding anything he says.
If you want to start your own show I would suggest to pick up a scene or something you want to do a tutorial on ,make it a nice package of fun and entertainment as well as some nice,simple and useful information and if you stay consistent I do believe that you'll do great .
If you have the passion for it , people will subscribe just for that I promise you . I've seen people who are like 10 years old , doing tutorials that are done 5000 times before , but they do it with so much passion and comedy that they have more than 2000-3000 subscribers . And if a 10 year old kid who doesn't know much about filmmaking can win such audience , why wouldn't you do just as well or even better?
Good luck .