RE: Changes for Pokémon (Opinion)
The in-world distinction between legendaries and non-legendaries, according to rowan, is that legendary pokemon achieved a higher than average degree of perfection, so speaking, and therefore they don't need to develop further (I'm paraphrasing here, it's been a long time since I've played DPP).
We know that, as of now, "not evolving" is, with "higher than average BST", two of the criteria to distinguish legendaries; manaphy can breed phione but phione can't evolve into manaphy, so they keep that criteria (leaving aside the question of if any one of them is superflous, since they're pretty much the same damn pokemon, conceptually and design-wise); similarly, in-game, carbink doesn't evolve into diancie, much to my chagrin.
The advantage of a simple form change over evolution, and maybe, breeding, is that it keeps the precedent of non-evolving, non-breed capable (most) legendaries and it's reversible, so you're not really locked into anything; it could even work with the mega evolution mechanic; and the mcguffin of the game is the item that acts as the pokemon's megastone.
Now that we're talking about this, I think this concept will fit nicely for my fakemon's legendary, I'll look more into it.
The in-world distinction between legendaries and non-legendaries, according to rowan, is that legendary pokemon achieved a higher than average degree of perfection, so speaking, and therefore they don't need to develop further (I'm paraphrasing here, it's been a long time since I've played DPP).
We know that, as of now, "not evolving" is, with "higher than average BST", two of the criteria to distinguish legendaries; manaphy can breed phione but phione can't evolve into manaphy, so they keep that criteria (leaving aside the question of if any one of them is superflous, since they're pretty much the same damn pokemon, conceptually and design-wise); similarly, in-game, carbink doesn't evolve into diancie, much to my chagrin.
The advantage of a simple form change over evolution, and maybe, breeding, is that it keeps the precedent of non-evolving, non-breed capable (most) legendaries and it's reversible, so you're not really locked into anything; it could even work with the mega evolution mechanic; and the mcguffin of the game is the item that acts as the pokemon's megastone.
Now that we're talking about this, I think this concept will fit nicely for my fakemon's legendary, I'll look more into it.