When I bought my Makita belt sander over 40 years back, a more pecunious friend bought an Elu. Apart from using a broader belt, it came with a rectangular frame that fitted around the base of the machine, and limited the tendency to gouge. If the sander was turned upside down and table-mounted (the design facilitated such use), the frame served as a ledge on which to register the workpiece, and a fence could be attached at one end.
I am not sure whether DeWalt continued this idea after the takeover, but have not seen it as an option for other popular brands. Elu had a lot of thoughtful add-ons in those days. A pox on limited budgets.