Heater and Cooler Blocks

Hypothetically these new blocks would be able to cool down or heat up an area. The main uses are that heater block would melt nearby ice, and snow. While the cooler block would do the opposite and make it so they do not melt, and turns water into ice.

These would not give off light which would be different from other blocks that keep them from melting, in order to keep the aesthetic of heat without light.

Mobs that burn in daylight would be attracted to the cooler, and they would no longer burn. Striders would be attracted to the heater, and be happy. These blocks would likely be powered by redstone, but if the developers decide they could be powered by something else such as fuel. The redstone power would determine the radius that the heat/cool would spread to.

The heater speeds up crop growth and copper oxidization, while the cooler slows/stops it. If placed directly underneath the farmland then it would only effect that crop.

You would be damaged for standing on top of these for too long unless you were wearing boots.

The cooler would be able to extinguish nearby fires, while the heater makes it spread more quickly (but would not start it). The heater (if placed directly underneath) can keep campfires lit underwater.

There could be even more uses but I feel like these are some of the best ones. Thanks for reading!