New Explosives

A rather simple suggestion, but it would make the most sense to include it in the Caves and Cliffs update since it would bring more strategy to mining:

TNT has been in the game for a while now, and since this block is quite useful for mining, it would only make sense to update it by... well... adding more types of it.

For example, there could be a more powerful version of TNT that can be crafted by 5 pieces of TNT and four pieces of gunpowder. It would be 5 times more power than a regular block of TNT and the block itself would be cyan-colored. This could be really useful for mining netherite and would make more sense than using beds.

Another example would be the addition of a TNT type that doesn't break ores. This could be crafted with one ingot of copper (giving copper another use) and 2 blocks of TNT side by side. This block's explosion would be equivalent to that of a regular TNT block, however it would keep ores intact and it would break all type of stone blocks (NOT ores) equivalently (except for obsidian).

These are just my ideas, obviously if more explosives were considered there could be another million and one ways of going about this.