One thing that I have noticed over several characters is the near extinction of really scary thieves.
I attribute this to the negation of hide through several qclass skills and abilities.
Given that the current PK pool ranges from 0 - 5 characters on at any one point in time, and the ease of which the current pbase may obtain qclass positions, the power of being a thief and using the shadows as a point of leverage has been reduced greatly.
I would like to see a restriction or a removal on the number of classes and/or abilities that enable characters to see thieves in hiding. Those that can see hidden completely outclass thieves in combat, and therefore their ability to see the thieves amounts to a negation of one of the thieves main tools in combat and survival. Consequently, thieves are prevented from being competitive against such classes.
This idea could tie into Celerity's previous tiered skill system, where a thief may select an advanced tier of hide at the expense of other advanced skill tiers. Customizing the class to be survivable against these enemies as a manifestation of a thief path/selection paradigm would change the way a thief character could perform against other thieves and other characters that can see hidden, and add flavor to one of the staple classes of the Forsaken Lands.
