It would be great to have subtasks trigger an action. For example, I have a project acting as a CRM with several subtasks for Initial Contact etc… I would like to have a rule where if I complete the subtask Initial Contact, it moves the task into my In Conversation column. Then when I click the subtask Transition To Strategy Call, it moves the task into Call Confirmed column. Lastly, I have a random number of Follow Up # fields where I click them to track how many times I have followed up with the prospect. At a given number of follow ups I want to move the task into a Dead Trail column.
This way I can categorize the conversation based on what is happening on a more granular level. This would really enhance Asana as a CRM.