Both ARPGs and MMORPGs suffer from one thing.
As soon as the “launch” happens whether its the new ladder season or a new MMO server, everyone jumps on an imaginary escalator headed in one direction. Meanwhile, the new players as time passes must start at the beginning and maybe there aren’t as many people starting there journey.
I feel both ARPGs and MMORPGs can benefit from a well designed rebirth system. It would make the entire game have value rather than going through the content once and only focusing on “end game” which I feel has been done to death.