We got some kind of answer in the thread, but i am not sure if it is authentical, or if someone is trolling us:

The ability to “pause” macros was removed because it created a level of automation that was not intended.
.. by a level 1 char named "Tsquared", signed with "Lead UI Programmer".. no idea, if thats a valid answer.

I am currently trying to simulate /castsequence using isboxer. Seems not as easy as i thought.

Made a thread here, would appreciate comments about it:

http://www.dual-boxing.com/showthread.php?t=31838

Thanks.