Trixters have very bad offense if they stick to their own tree so they seem to rely purely on exhaustion of the opponent. Currently the issue is that they will probably become one-dimensional like the Shadows who always go for the endurance-draining builds because the offensive ones just don't cut it. Other than that, the Cheating Bastard build is annoyingly efficient vs. everything which can't consistently score high damage and terrible vs. bleeders of all kinds and Power Theatrics.
Dirty Tricks is indeed too powerful for such a low-tier skill. Attack avoidance + up to 2 rounds of Blind is often better than even Create Distance (which is upper tier skill).