I have more subscribers than anyone on that list. I do not do any editing beyond start/end trimming. I do not own an expensive camera. I do not but every new cube and review it. I do not make already-been-done tutorials on the same tired subjects.
I spend my time practicing in order to ACTUALLY BE GOOD AT CUBING.
I make tutorials for things that haven't been done, where I ACTUALLY KNOW WHAT I AM TALKING ABOUT.
I don't ask people what I should make videos about, if I don't have anything good to put up I JUST DON'T UPLOAD VIDEOS.
Just make the kind of videos you would like to watch. Upload however often you feel like. You want music in your videos? Put music in your videos. Being well-known and well-liked isn't something you can force. If your videos are really worth watching then people will watch them. If not, maybe you should find something else to occupy your time.