There should be a standard API (in DirectInput, maybe?) for controlling mouse illumination. Then, games could actually make use it to show things like what mode you're in.
Double click issue? It might develop after several years, but until then, Deathadder is undefeatable.
Usually just after the 2 year(warranty period) mark alot of the 2013s, and even the chromas have started getting a double click issue.
The tac switch gets worn, so one input is occasionally read as two.