Unfortunately some monster classes get reduced to 1 monster(like Ethereal and Mythical). However, they were put into another Class of monsters! Whether that makes the hypothetical game/lore more interesting or more worse is up to you

This would be cool! Would the breeding system and element system be the same?

Kinda yeah The new elements breed like normal but the Specialty Class(Electricity, Mythical, Legendary, Celestial, and Compose) can’t breed, as usual The Island Skin elements are Harvest, Dry, Flight, Aquatic, and Degrade! Thought of them up not too long ago :}

And they are Adults, since they didn’t put as much power into fight and were able to be Reborn as Adults