I would like to see heated gloves that include a temperature sensor to keep the heat at just the right temperature regardless of the weather. Current heated gloves do not measure how hot it is in the glove. You select either on or off, and that's it for heat control. So battery life suffers, your hand suffers from excessive or not enough heat. The temperature control could be built in to the battery box with a small LCD display and controls. An inexpensive and small Microchip PIC16F628 micro controller would interface with the LCD and provide temperature reading conversion from the temperature sensor in the glove. The sensor would be a small thermocouple, RTD, or thermistor in each glove. The aesthetics of the gloves would be improved, as the battery box with LCD would look more like it had a real function other than just a box for batteries. Materials would be mostly plastic, resulting in good value for the money.
Just an idea.