In 1.4, there was a feature called single stepping. It slowed the project down and allowed you to see where problems were, and I found it very helpful. Is there any plans for single stepping to return to scratch?

Please, please, please add this. I have needed this so much.

Hmmm…. Well this might be confusing, because in the flash version of scratch, it can only run one block at a time, so the flashes might keep jumping around your different scripts and sprites.