Sometimes we need to read between the lines to see what is affecting our classes in positive ways:
Nagash’s Staff of Sorcery now boost less.
Stat mods now give +2 per level instead of 5.
With less stats for everyone means that thief poison will have a higher impact in the PvP scene. It also means that it will be more equal to other classes in PvE.
Might not look as much, but the effect of this can be bigger than you expect.
Hope this clears things up for you, also if things need tweaking later on it shouldn’t be a problem to adjust!