I had a home made one on my 2d bike when I got it. It didn't raise the bike much (but a little), but it doubled the footprint size, and I think was built and added more to avoid going over on hot asphalt or mud/dirt than making the bike sit taller. It was held on with screws around and not through the stand, and I failed to keep them tight and it disappeared one day.
I have a purpose built throw down plate in a saddlebag if I'm afraid the kickstand footing is soft.
I shim with wood when I need to do certain work on it.
It isn't particularly hard to lift off the stand as it is, but I have discovered that purely stock bikes, with standard 13" shocks and tires, and no cross-member damage or bends, do not all lean the same. My two stock interstates do not lean the same, one is harder to lift and leans more than the other, and I have carefully looked at my cross-members (undamaged).
And it only takes a couple degrees of added lean for the bike to get noticeably heavier to pull off the stand. And being short of stature/legs makes it more noticeable.
Mike, while I appreciate the ingenuity, I could not be seen in public with that wood and ziptie mod. That is what some down my way commonly refer to as red neck engineering (at it's finest).
I think if you were willing to drill a decent size hole (for a good strong screw; like quarter inch) through the stand pad, it would not be difficult to add a chunk of metal underneath that would work fine. You would need to countersink the hole in the metal shim, and put a flat head bolt bottom up in it, so the head would not get ground off in use. Then maybe an acorn nut on top to hide and protect threads and dress it up. And a drop of Locktite.