Favorite part is baseball launcher, now we can launch cars to the sky and make it explode in the sky.
They should add a new achievement: Destroy a vertibird using launched car explosion.
It's also a good tool to remove skeletons and never despawn bodies from your settlement.
Also next Gen update made heavy gun build dumbly overpowered in the form of heavy flamer and tesla cannon. 2 powerful heavy guns with plenty of ammo.
Now everyone gets them for free.
Heavy flamer can even be obtained very early in the game and is almost silent. It's damage is so good that even with an almost usless ghoul slayer's prefix it's still gamebreaking consider how cheap flamer fuel is.
Tesla cannon is never ending missile launcher runs on fusion cells.
Actually I bought both creation years ago and tested both extensively, but ultimately decided to against using them by deleting CC contents because they are not part of vanilla game.
But now they are part of vanilla game and I shall abuse both extensively.