Macros-Interval between skills

KevinK - Sanctuary

When putting skills on macros, i think the macros menu should state how long will it take for the next skill to cast. It could be called Interval between cast. For example, 2 skills have 1s channeling and 1s cast. The interval between cast would be 2 seconds, 1 for the casting of the first one, 1 for the channeling of the second skill. So it's the time it takes between casting skills.
It would also be convenient to have a "total time consumed" of the whole macros. It would be easier to decide which combination of skills would kill a mob faster.