Let me put it to you this way: Psylocke just had a significant number of changes made. They introduced a patch yesterday that now has all her assassinate abilities hitting twice and doing double damage. Also, the Power Cosmic damage modifiers kick in for her even when you are using a 100% mental damage build. That's right, hitting with all mental abilities somehow triggers the boost that is only supposed to happen when hitting with physical abilities.
That patch is going live in a matter of hours.
Basically, the TC is relatively worthless. They make massive adjustments based on the whims of the vocal minority, then let game altering bugs slide through. I think because this game has a smaller player base, the hundreds of players who get on the TC and make comments almost universally get what they want. Hence, we now have a toggle that can't be used by Psylocke's strongest build.
For all practical purposes, the few days after a major patch goes live are the actual test phase.