V quick post, might be of use to someone? (If cheap! )
soft luggae arrived just before big trip couple of years ago, sagged etc. So quickly knocked up a couple of stays from scrap. I wanted simple, light, cheap, and worked well but I lost them/found one again in the garage, and as needing again, will make again, Maybe get fancy or keep as is? but principle will be the same.
simple using one screw, Bright steel 18mm tube, Stay at 45deg when down so cant punture tyre in an off. Stay up or go in bag when not in use. Weight nothing. no sharp edges.
Other mod is converted my rear stand to a trolley as always needing to move bikes around. See pics. Works well. Note 75mm or bigger solid wheels are best and Lockable.
chopped original double wheels off, mig'd on small castors. Rubber comes off, so used bigger solid ones.