Disclaimer: I’ve made my living with design. Professionally, not just someone with a shop in their garage.
I agree. Commercial kitchens as well as home kitchens should benefit from innovation. But it would be naive to think every product designed is worthy of creation. All I have to say is “disposable flashlights,” or point to the myriad of products sold on TV that are a waste of materials and energy. A sleeve that changes colors does nothing for five or six pans on a stove. They will all be the same color. Hot. In the end, a sleeve might prevent 10% of burns. That, in my opinion, does not solve the problem (sleeves, btw, already exist, yes?). Maybe we should focus on changing the fact that line cooks are underpaid and work in a system that celebrates stress and pressure in a dangerous environment.
No new product should be a liability in efficiency. Shark gloves and pot handle sleeves a liability. Corporate penny pinchers are hired and paid to reduce financial waste. Getting sued because someone cut themselves is waste. Slowing down a line or prep cook is a sacrifice they are willing to make. Then the blame goes to the underpaid, overworked cook when efficiency gets compromised.
I did suggest, by the way, to scrap the sleeve and go with a heat sensitive handle instead. I think it would have more of an impact with home kitchens, but does little to solve the problem of line cooks grabbing a hot pan on a stove because they "forgot." Pliable cutting mats are good for the handicapped or elderly, but create plastic waste. What problem does it solve? Ceramic knives were developed to reduce sharpening, but what happens to them once they've exceeded their useful lifetime? You cannot sharpen them again. Steel can be recycled. Lets not confuse convenience with solving a real problem.
A cage over a mixer makes a ton of sense, but you cannot design stupidity out of humans.