Yes, I know, I'm insane; hear me out.
Carrion Glint/Mallyx puts out enough torment and chill to melt illusions.
Song of the Mists, namely Mallyx and Glint's flavors, apply burning and chilled/ slow and torment to nearby illusions on swap.
Pulsating Pestilence puts condis on illusions. namely confusion from the Mesmer themselves, but also cripple/burning if you've acquired it.
Herald line grants superspeed on stunbreak, which can let you escape shatters after being Power Locked.
I think revenant by nature might be able to shut mesmers down if specced properly.
The "Balance" is a fantasy -- another mortal superstition.