One big issue that affects LED bulbs from becoming dim or even fail is overheated. In some condition, bulbs are burnt out quickly. Thus, different manufacturers think of different materials for dissipating heat. There are three main ways for dissipating heat of LED bulbs—built-in cooling fans, aluminum housing dissipation, and copper wires.
So is there any new concepts of heat dissipation for bulbs? Some customers will think that built-in fans will be too noisy while working. Others think that bulb depends on the aluminum housing or the copper wires only cannot dissipate heat well. In fact, why we cannot make a new kind of LED bulb that can be temperature controlled? Heat is generated when the bulb keeps working for a long time. Yet, some heat cannot be dissipated so quickly and directly harm the bulb, which will make the bulb become dim. However, if the bulbs can be temperature controlled. When the bulb keeps working for a long time, you can find that the brightness of the bulb will fade a little bit. But when the temperature goes down, the brightness will become bright as before. With this function, bulbs will not affect heat and fail easily.
Some people would also prefer bulbs which can change colors. If the temperature controlled bulbs can make it. I think the bulbs can change colors when the temperature of the bulb goes up and down.
If all I think can be real, I am sure lots of people would love to have them. And bulbs will be more useful and do not need to change so quickly.