Petition to make new Heroes locked 1 week before release them on ranked

I know its pretty cool to play new heroes on ranked but you DON’T KNOW how to play them 1min after the update
And if you know how to play them, I DON’T KNOW how to play in synergy with them !

Some heros in this game are not that hard or does not require a high skill level to play them with, not including people do play on the PTR so its possible to learn them.