Macro helper?
 

Trying to use macros is a pain when you have multiple instant cast spells that will not function properly in a macro. The macro will essentially cycle through the first instacast. Is there a way or an add-on that will cycle instacast spells appropriately?

The 1.6 PTS has recently had the addon API updated in numerous ways - the two major ones being item/inventory-specific functionality, and macro functionality.

From what I understand, you can now make it so you can click on an addon frame to cast a macro command. I am not sure if you can have more than one macro command per addon frame - some clarification would be great.

The main limitation is that you have to click on something for the macro to cast, and the set macro can not be changed until you are out of combat.

Therefore, an addon that can add extra options or capabilities to macros (ex. If you have this buff, cast this skill. If not, then cast this other skill.) may be possible.
But I am not completely sure if something as dynamic as a conditional statement (i.e. if) is possible, because I know that they want any macro commands used in combat to be non-dynamic.

What you could try is assign different instant cast spells in a macro to a Ctrl, Alt or Shift combo modifier. In this way you can at least have different instant spells in a macro thread.