Like some 4 years ago, I have encountered problems with two Ordinator-related Legion quests. Maybe there was some patch released but, if so, I have not got it.
1. Slanders - if I mention "Slanders", Suryn Athones and a few other Ordinators turn hostile. Killing them or just defending and letting summoned minions to do the work gives 4000 gp bounty. A workaround: do not speak with Suryn, wear 100% Chameleon suit (maybe this is not necessary), summon a minion, cast maximum effect Frenzy on Athones and wait until the minion (in my case, Xivilai) does the work.
2. Saprius Entius - after talking with him, two non-hostile Ordinators appear and the quest would not proceed. A workaround: summon a minion, cast Frenzy on any of the Ordinators, wait until a minion and Saprius do the work, only healing oneself (by any means) and Saprius (with spells).
And a general comment: during my previous attempt I had problems with master duels - killing the guildmaster (or some other important persons like Eydis) made my hero to be expelled from the guild. In my present go I do it another way: I summon Xivilai and just defend.