Long-term, replacing the tables code will be the best approach, I think. A year or so ago I actually wrote a new tables system as part of a test app, and it worked well. It used the same approach Nisus uses internally. You could resize cells by dragging, select cells and columns, and so on. There were still some kinks to be ironed out, though, and some limitations. However, I’ve put it on hold since Apple announced TextKit 2, because I’m loath to spend a lot more time on code that I know I’m going to need to completely replace in the not so distant future.