Rogues scale better than Monks imo, particularly 11+ where monks usually plateau. And if we're comparing specific subclasses, well, I'll take an Arcane Trickster or Soulknife over a Shadow or Mercy any day - though I suppose your DM's willingness to let PWT be an on-demand Surprise Button can change the power math on that.
I definitely hate this too, and it's the thing I'm saddest about from standardadized subclass progression not making it through the playtest. (Well, that, and the fact that now we can't have universal subclasses as a result.
But if there was any consolation prize that would make me feel better about what happened - WM, CS, and level 1 feat would do the trick.