We too would like to move deals through the deal flow using a workflow. Given this is just changing a database field, and Hubspot is great at doing this with pretty much all other fields, I am guessing there is some specific reason why HubSpot has decided to avoid this within the Product Management folks there?
Please contact me if you would like to hear our use case.
This is the only major feature block I have hit in HubSpot, and it is the type I have hit in other CRMs that have been very frustrating. Very hopeful HubSpot can change this soon, although we need to run a launch without it now and will have to store data that should be in the deal flow in a contact property in a janky way as a result and will be difficult to unwind. Humans moving deals through stages with mouse clicks should not be a requirement to use the deal flow tool and associated visualizations 