I just think it could have gone much farther in depth, have some kind of mystery. Like, finding long lost formulae hidden in drauger crypts, or learning the secrets of the cult of Vaermina. Also, I would have enjoyed certain ingredients to have effects such as elemental damage, or calming. It would also have been enjoyable if merchants, such as peddlers and Kahjiit caravans, sold a variety of ingredients from other provinces, making available many different potion and poison effects not available elswhere.
In short, it just doesn't feel like you can go above and beyond what the other alchemists have done.
Thoughts?