I don't want to blame you, you have put in a lot of work. My point is, that at the current state, your kanban offers nothing special. It is like the other 1000 kanban boards.

I think you should specialize your board for a selected audience. Not a board for all, that kind of boards we have.

Example: Kanban with special features for game developement. More visual options, images and not only text. Currently there exists only some really overbloated tools.