Is there a way to complete a task, and pass it on to someone (ie: for approval or additional steps)?

[ceturley]

Could subtasks be a workaround for you?
You can use the ‘start date’ feature to set a date range for the parent task, and give subtasks their own due dates. Personally I find this method the easiest for multi step tasks.
Example:

This way you can assign the main task to yourself, and it will show up for your reviews. If you don’t want extra tasks showing up on your task list, you don’t need to assign your subtasks to yourself.