I'd recommend you take Illusionary Persona and Illusionary Elasticity.
Illusionary Persona is absolutely incredible. Not only will it boost the power of all your shatter skills when you have illusions, since it will count as having 4 not 3 to shatter, you can use it when you have no illusions at all, giving you a 1s Distortion any time, which is a literal life saver. Since the #3 skill Diversion does not stack daze duration unless the illusions reach the mob at different times, you may as well also use this with no illusions up.
Illusionary Elasticity will greatly boost your staff auto-attack DPS, as well of course as buffing more allies and giving enemies more conditions. It's particularly good with staff/gs because it will also increase the bounces of Mirror Blade (GS #2) which means more buffs, more conditions.
If you find yourself not using your #2 shatter (I don't use it but I'm not a condition spec) because you can't create enough illusions to keep it and mind wrack on cooldown, then seriously consider 20 pts in Dueling for Deceptive Evasion, which will have you making clones like nobody's business when it's combined with Dueling's Critical Infusion (Vigor on crits), and you'll also get Sharper Images which will make your illusions inflict bleed on critical hits. This is huge for a condition damage build. Even if you don't want Deceptive Evasion, consider Sharper Images, but they do all have good synergy.
You can also consider phantasms which will do projectile or whirl finishers, like the duelist or warden on the pistol or focus. The advantage to these is, in addition to high crit rates, their attacks will combo with your ethereal fields (chaos storm etc) and send out large stacks of confusion. This can be great with the Scepter #3 skill Confusing Images, which builds up stacks as well as hitting pretty hard. Scepter #2 can also blind.
I'm not saying you have to change weapons, but play around with things and see what you like.
Also consider that staff clones and main hand sword clones will have the effects of your auto-attack for those skills. Staff clones will have bouncing projectiles which inflict conditions and buff allies, and sword clones will inflict vulnerability and remove a boon. These can be good paired with the create clone on dodge trait or the mirror images skill to quickly make a lot for more conditions when your phantasms are on cooldown.
Edited by Mind Wrack, 17 October 2012 - 08:33 PM.