Personally, I'd encourage poisoners to stay as a choice for the players with determination, ingenuity, and patience, rather than a choice for people who'd use it primarily for PK. As it is, it's the sort of thing that makes a good challenge for the skilled while being a total pain for the rest of the playerbase.

Conjurers don't seem to need to be as much of a challenge, and I think could use a little boost in a few places. This would allow more people to play them without much trouble, making the conjurer section of the playerbase more than just the very skilled and the clueless. A few more middle-skill players could be a good thing for a class that looks like it's supposed to be one of the more common mage types.

All this means it's either a good thing or a bad thing I'm not an Imm, and have no influence on these things.