Logitech's ergonomic mice get praised in every tech blog, but wrist pain isn't always the mouse's fault. My cousin swore his carpal tunnel was from his keyboard until he adjusted his chair height. Adding foam might help, but it sounds like a band-aid for a deeper setup issue. Most people just need to take breaks and stretch, not modify their hardware. I've used a basic dell mouse for years without issues, so maybe the problem is overblown. Spending time on DIY fixes seems excessive when a five minute adjustment could do the trick.