Just put them into folders like on thengamer.com/GE/ then.
I still don't like the idea of the name being the first thing in the file name. It makes more sense to sort them by difficulty level.
The naming system helps to be universal, so then people don't have 243432 copies of the same vid, just with some difference in the name style.
The naming system on thengamer.com isn't consistent at all, so whichever naming system I choose it wouldn't solve that problem.
Also, yours is ugly.
Other than the order the info is listed in, the only difference is that I didn't capitalize the level names, and I left out the extra spaces. Extra spaces are ugly, though I wouldn't mind capitalizing the level names if people think that would look better.
So few people go by there last names, nobody is going to know that Ham = Matthijs, use the whole name.
Some people are better known by their last name and some people are better known by their first name. I'm not sure exactly which people are better known by their first name, but if you make a list then I'll edit the file names for those people. Or an alternative would be to add everyone's full name in the description next to the vid.