So what are you switching Justice to? (Or aren't you?)

[Messyr]

From my perspective I really appreciate the nerf of NJ.
After the nerf my very old Symbiosis deck has enough provisions for Gezras and is actually doing better than with NJ.

Yes, Symbiosis with Gezras works very well. Sure, the deck lost a huge R1 tempo by cutting NJ, but their R3 got seriously stronger (especially devotion variants).