It's not stealing from Monk, Rag - Second-Story work functionally gives you a climbing speed, more or less, but that's not the same things as Monk's mid level, supernatural-like ability to run on smooth walls and across the surface of water (And I can't wait to see BG3's interpretation of that ability...).
I know ...
I just said that i can easily imagine that some people will see that differently. :P
And yes, im looking forward for this too ...
This and allowing druids in spider form to climb walls. :3
I'd also like proficiency in Athletics to increase the jumping distance for low strength characters...
Athletics, or Acrobacy wichever is higher i would dare to say. :-/
And yes i know that Acrobacy is actualy more like Capability to remain Ballance, but still ...