I've been playing this game since the Beta and very very rarely do I use Macros. but I wanted to make a couple for an experiment, only to discover that there is no version of /castsequence or anything like it that I can find except the horrible /wait.

is there any kind of a workaround? or a reason why the ability is not in?

in case you don't know what it does in WoW, you use cast sequence when you want abilities to go off in a specific order, but only as you press the button.