Ability to move steps between conditional branches / Undo step in Sequencer

As a user building sequences in the sequencer, I want to be able to easily move steps or an entire sub-sequence branch from one conditional branch (e.g. "Yes") to another (e.g. "No"), rather than having them automatically default to one side and requiring me to rebuild the sequence steps manually. It would also be helpful to have an "undo" step to go back to a former state in case of a mistake.