Oh Ash, I just came to think about it:
Could you add an action "Comment". An action that wouldn't be executed, as it is strictly a comment, within the "actions" list of an event.
We can comment events, levels in subevents, and I use a lot comments to break and organize my code. Comments as label if you will.
And some times, with a lot of actions of different natures (using and targeting different objects) to know where I was, I often wished to be able to put comment inside the actions.
I hope this could be achieved before r51 release.