We could just wait and see how the changes are once the patch hits tomorrow. Not like they can change it now and no point speculating on how it works or decide whether its seriously that bad till we try it. If it ruins the game it will probably be adjusted in 1.19a like how the terrible SP from guildleves were changed in 1.18a.

I'm willing to bet its fine though, since they have been testing the new content with it for quite a while.