Gnash's removal probably can be attributed to the maximum number of buff/debuffs a target can have. Same reason why healers lost all their dots, apparently. And there's still been issues with too many buff/debuffs on players that's kept them from receiving a tank lb3 and such. The "~ ready" buffs they've added in DT's apparently made it worse too.

You'd think if it's being an active problem to both job and fight design it should be major priority.