I agree with Squirrelloid - you should learn more about Dominions and multiplayer
Right now EVERYONE that wants to win a game pretty much needs tarts. Both as SCs and spellcasters. You lost the race to Chalice? You can get GoH. This makes 2 nations with healthy tarts. You can't get that too? You wish for Chalice. You can't? Well, you are probably going to lose the game anyway, if you are losing in every category. Or try to borrow it.
And yes, the goal is to give pretty much every path alternative to tarts. So every nation can play differently. Right know EVERYONE must have death. There is still same problem with S [and I hope mind hunts get more expensive].
Roc is more fragile than Gate Cleaver on good guy. And gate cleaver is really good weapon to carry.