Hans made videos such as "how to become a grandmaster" and "how levy can become a grandmaster) And I have an idea where he makes those videos for different levels. For example "how to improve at 1600-1800 fide" how to improve at 2000-2100 fide" and etc. I dont know about anything below 1600 fide because I think a person can figure that out themselvs with no problem if they are commited to chess improvement, but I think that doing something like this for each level above about 1600 fide would be super helpfull.