I have used data-driven design in the past and it has worked quite well. What I dislike about it is if you need some form of a string whose value has to be updated based on other values.
e.g., “Exports %x percent of %y”. In that case you will need an extra column serving as an identifier, to tell which variable in your class will correspond with the conventional symbols %x and %y. Now, don’t get me wrong, there might be a way around this, but this is not the point of this thread (albeit I would not mind having an answer to this one as well).