I’ve always resisted adding wheels or a mobile base to my workbenches. They can be complex, in the way of your feet and take some fiddling to engage and disengage. So we’ve always put our benches up on furniture dollys when we needed to move them.
Only change I'd make to this design is to replace the straps with eye bolts sized to threaded rod. They'd be stronger and the threaded rod wouldn't need to rotate in the stand legs meaning you could then use nylon lined lock nuts. Two nuts wi