The copy in three lengths is the tip I'd pass on to anyone doing a round of directories. I'd do the same for images: export the logo, a cover image and two or three screenshots once, in the sizes these forms ask for most, and keep them in the same folder as the copy doc. Two more columns that would help in your tracker. First, which screenshot set each listing uses. Listings that stay up for months will keep showing the old interface after a redesign, and the tracker is the only place that tells you which ones to update. Second, whether the form has a field for a video link. Some do, Product Hunt included, and having one short demo video ready makes those submissions copy and paste too.