For example.
There were three similar plat pets during latest three events, each better than previous: heroic bevo, arcanite precious, arcanite loveling. First two were outdated by later, value dropped like 2x-4x times.

So it's kinda disappointing for people who acquired it either with gold or plat. Personally I am not sure how if I should invest some big gold /plat if things are outdated SO fast