When adding NPCs I've found picking out spells for hostile mage NPCs is difficult. Most of the time I've ended up adding unique spells. Since the vanilla morrowind spell lists are very limiting and making unique spells all the time is annoying and time consuming, TR should have a wider selection of spells that can be added to hostile mage NPCs.
After doing the questline for Bel-Betu, and not killing Vildaryn Terano, just telling him to leave progressed the quest since I was above level 15 when I threatened him to leave. I completed Blood Ritual of Volenfaryon, and afterwards killing Bel-Betu. I then brought an extra labyrinth key to Vildaryn and he entered and the voice lines/script for Vildaryn to die still went off. I was hoping for some secret dialogue regarding him being dead/a crystal or something. I checked on UESP if I maybe broke something, and saw nothing regarding this happening.
Freeing rowdy rilmas by unlocking the jail door (without asking about his other topics) seems to brick the quest. I don't get any journal updates and his go free dialogue changes to something along the lines of "the door's unlocked lets go" but he just sits there.
I started the Wicked Water Woes quest after becoming the Obainat Nerevarine. Talking about "herbs and hides", I was directed to a gulakhan. So far so good, the dialog doesn't state explicitly who the gulakhan is. (Missing topic here, by the way, I should be able to ask who that gulakhan is)
However, here things get buggy. Since I took Asha-tara's side in the Nerevarine quest, Massur-Dan is dead, and apparently, Massur-Dan was the only NPC who could talk about the "herbs and hides" topic anymore.
During quest for Obainat Nerevarine, Massur-Dan is challenging the player. After calming him down with a spell and talking to him, he says ''Massur-Dan has called the challenge. You must answer." like everyone else. I think he should say something more combat oriented... Or the quest should take a different turn from here.
In Tamriel_Data, the Imga Voice line "May your friends betray you and your enemies triumph!" has a Random chance of >= 40, same as the entry above it. It should be >= 30.