I've seen people get off asura, clearance, DB, and lots of other reasonably long skills during leech end if they time it right. I agree that howling is a devastating skill though, but I maintain that not only does leech end give GX the necessity they need, but also forces the other team to also employ a support GX to actively counter it. I've always been a fan of this extra layer of tactics which makes GX's nearly as useful as other support classes.
Other flinch poisons don't hinder the player often enough to make them seek out an antidote, defeating the purpose and letting them play pretty much as affectively as when they are not poisoned. Oblivion curse is great, but very rare, and new updates, as far as I know, have given people the ability to stat-resist it much more than before. (tested on previous servers but not here)
The paralysis and pyrexia are decent against some classes, but GX's don't stand a chance against some classes such as sura unless leech end is working like it originally did. GX used to be relied on to slow down allot of enemy players especially when defending, in my experience. In my opinion this change pushes every GX to go offensive role without question even if poisons are still regarded as decent. To be honest even before this change you never really see any supportive role GX's, except me. So regardless of how good poisons still are, if they are not as good as they used to be, you will see even less supportive GXs.
Edited by Scias, 05 March 2015 - 06:25 PM.