This is my workflow too except I use my inbox for ‘unprocessed’ and I flag items that need action; both are used for quick reference depending on the situation.
A ‘pro tip’ example of quick reference and workflow:
A couple weeks ago the softball team I coach started their season. Not knowing any of the kids, I created a draft list with their names for reference and left it in my inbox with a ‘softball’ tag.
Why my inbox?
Pro tip: I didn’t want to carry my phone with me during practice, so storing the draft in my inbox allowed me quick access to the list on my Watch and a more discrete way of checking names.
As I learned everyone’s name, the draft has now moved from my inbox to flagged. Its not actionable, but I still want it for quick reference (just in case) and don’t feel I need it on my wrist any longer. As the season winds down, the draft will be archived so I can reference it next season via my softball tagged workspace.