I saw this video, and it seems like a good idea for a really flat work surface (assuming you don’t cut into it). It also has the benefit of being really straight in one direction, without caring as much about the other. Some of the benefit of tough steel, without needing a welder (or welding skills).
(((Sorry if this is a repost, I thought I posted this a day or two ago, but I don’t see it, ATM))).