Include more information in-game
I've been told that some stats, like attack speed, have a capped value. Without reading this online, the only way I would have learned that would be by building too much attack speed in game and probably thinking it was a bug or weird math scaling falloff thing. Can this information be displayed somewhere in game? My first thought would be on the tooltip for the stat on the panel in the lower left corner.
Likewise, can CDR be displayed on the panel with a note about its cap?
The current system essentially requires players that don't know about this to be told by other players. This seems a bad method to communicate base mechanics of the system.