Workflow edit screen has too many elements causing overload

workflow/edit page
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I have 7 states (+ creation).
I have 13 roles (6 of which I care about for the workflow)
Transitions are very simple meaning in some cases 1 user role can make 1 transition forward between states.

All this visual clutter encourages human error and makes interaction a bit slower.

Suggestions:

• Ask what roles are involved in the workflow somewhere (so I have 6 instead of 13)
• Where applicable, show 'No roles selected. Click to see and select roles' for all cells in that massive state grid.
• Enable collapsable state rows. I suggest collapse all but the first by default. Offer expand/collapse all toggle.
• Put permissions summary on a different page or in a modal popup
• Put access control on a different page