Creepers & Creeplets (Mobs for the Charged Forest)

Native to the Charged Forest would be the Creepers and Creeplets. This gives a chance to rework the creeper and give it a life cycle, like many other existing mobs.
What the Creeper is
The Creeper is considered to be made of Moss and Leaves so its a plant, where the TNT comes from is
not so clear.
Creepers whole purpose in the game is to blow up players or be harvested for gunpowder/music discs, which are needed for a few recipes like splash potions, fireworks, fire charges, and tnt.
Creeper life Cycle 
The stages for the Creepers life cycle could go something like this Creeper Fruit/Plant -> Creeplet (Baby Creeper )-> Creeper.
The Creepers growth stage should be effected by 2 things being in sunlight and being fed bone Meal

Addition and Rework
Creepers could be reworked to where besides just dropping gunpowder they could also drop sand which would make sand renewable.

Creepers ability to destroy blocks make them unique but annoying, so what can be done is to make it so all the broken blocks by the explosion are dropped and make it so those blocks cant be deleted again by another explosion.

Creepers when charged are more dangerous because of increased blast radius and damage, but this system can be added onto, what if one could acquire a creeper in a boat and then start to feed it gunpowder, as with each gunpowder it consumes the explosion radius increases which would be a effective way to mine for blocks or ore, clear room underground for building, and troll players or set traps