Great depressing list. Tomic is the only promising guy on that list, still seriously questionable if he is going to be more than a top 10 player. Raonic is Karlovicesque but slightly better playing tennis, how much can he improve when he is turning 22 in 6 months?
Looking for 18 year olds, I find a Kubler ranked 64th turning 19 in 2 months. 400th in the world is not good when you are turning 19, remember Rafa was nr2? Nah, wont be so cruel to compare these bunch of avarage joes to Rafa, sorry lets say Djokovic and Murray were ranked in the top 20 when they turned 19. At the time Tomic is losing in 1st round here in IW, Djokovic was making finals of both Indian Wells and Miami (winning Miami).
This is clearly the worst generation I have ever seen. Federer, Nadal and Djokovic can safely dominate for another half decade or so.