Frankly, if those potions were made to work more elegantly (combining them into one potion with a working dodge rediction that allowed the chance for the very next hit to be a dodge, and then giving you one more certain dodge after that, for example), cold justify removing poison alltogather - if they were more noob friendly more people would see the benefits of going for them as TT's major endgame boon. Because they ARE a major end game boon against anything that isn't a damage sponge.
You could also give TT more boon synergy with making the dodge boon stackable the way Tiki's edge is.
Cheap perma poison boon is cheap. I'd know.
However, Gaan'Telet would quickly become a lot harder without it, which is good, because the only reason it looks remotely doable now is because of that boon. Not sure about the new busted wizard and bloodmage, though.