I don't think Mojang or atleast a Mojang employee has a Planet Minecraft account, and even if they had, they probably wouldn't not even read posts, i think Hardcore Mode will be added on Bedrock Edition in 2020 or 2021, or maybe it will never get added, but you can just create a world on Bedrock Edition, set the world difficulty to Hard Mode, and delete the world everytime you die, done, you will be playing Hardcore Mode in Minecraft: Bedrock Edition.