Hey Troy,
Longer legs brings the problem of axle length and legs spreading out at the leg bottom. In other words... you would need a triangle from a 26” for longer legs on a 22” ...
Yes, increasing leg length only nets a smaller corresponding grill height, but you can still achieve a meaningful height increase without tripping over what you've made. The front leg can have a curve introduced so that you don't trip over it. Doesn't matter as much if the rear wheels extend beyond the bowl diameter.
I've tackled the triangle issue two different ways. Both involve retaining the original triangle regardless of grill being worked on.
So consider: If you're already in a project where you're measuring and cutting up shower curtain rods for legs, it's not much of a challenge to drill holes into them for the triangle ... furthermore, an added benefit of (probably) not getting the hole positions 110% lined up is that the triangle will finally emerge as a legit structural component, thereby helping protect legs from wobbling and maybe also, sockets from bending from the constant lever motion of moving legs.
I like to roll my kettles. I retain the rear wheels and use a hardware store 3/8" solid aluminum rod cut to size, installed at the ends of the rear legs previously beaten flat at an angle resembling originals.
I'll post a few pics in a separate thread after a while.