[JesseK]

If air volume is an issue, scrap the 2" cylinder in lieu of a smaller bore. Make up for the loss of force via constant-force springs. It'll take some calculations to ensure you're still where you need to be. The tradeoffs would be cost (need to purchase new cylinder(s)) & space (CFS's are 2" wide for that amount of force) versus air consumption. Weight & c.g. will probably be about the same.

I love that CAD animation. It's probably the coolest thing I've seen all season.

It will be interesting to see what happens with all of the center-based 30-point climbers. It's also interesting to see that there haven't been any tangible claims (photos, video, sketches of ideas) of a corner-climber yet.