I started thinking along the same lines after reading the article and thought to use it as a task to learn org table manipulation commands.
Unfortunately, I also found that my emacs has a problem that messes up basic table cell copy or cut commands. See my post 'Cask-initialize messes up org table manipulation commands' to this mailing list a few days ago. I started planning and implementing an org-kanban-mode but stopped when I hit this problem. I still have not solved it.
My idea was to have org-kanban as a minor mode that works on org mode buffers. A defvar gives a default set of TODO keywords and the user can configure any words into her own setup. Command org-kanban-write-keywords writes the keywords to a '#+SEQ_TODO:' line at the top of the buffer and makes sure there are no other '#+SEQ_TODO:' lines. This makes the keywords buffer local and easy to modify. A function generates a named table with current todo keywords. The user then fills up the table with tasks. A house keeping function creates links of the task names, makes sure that there is maximum one task on each line, and creates link targets with the correct todo keyword. Ideally, there should be a function to update the table is the keywords are changed, but that could be messy.
The org-kanban-mode also overrides the org table key bindings of M-<right> and M-<left> to move cell contents, i.e. tasks, left and right. The move-cell functions would also update the todo status of the lined header.
I have about 100 lines of code implementing some of the plan above that I am happy to share. if you are interested, I could, for example, put the code in a shared and GPL'd github repo, and you could take it from there.
Let me know,