The problem with the G3 iMac’s mouse was the cable. The low, round puck didn’t provide a good grip for fighting with the very stiff cable. If it had been wireless it would, I think, have been much more pleasant to hold. It’s not the case that a mouse has to be a blob-shaped fistful of plastic modeled after the MS Mouse 2.0 https://en.wikipedia.org/wiki/Microsoft_Mouse#/media/File:Mi... to be comfortable to hold. Think how you hold a pen, or how a professional holds a kitchen knife.