I'm not using this mod currently, because wild farming hasn't updated to 1.4.10, but I have a few suggestions for things I'd like to see in the future, as I'm no modder, and my previous attempts at code have been disasterous.
Amphibian Adaptation: increase the amount of time you can spend under water, and increase the speed of swimming
Ambushers Applique: increase the length of time ranged weapons can be aimed before losing accuracy, increases melee range slightly
Cat's Eye Catalyst: increases the range at which darkness obscures your vision completely, making night travel easier
Sweet Sedative: increases the length of time the player can spend sleeping (+1 hour/ level?)
Trapper's Tincture: places an outline on animals in a radius around you that shows through branches and leaves, making it harder for animals to lose you in the brush
Cloying Compound: Decreases the rate at which temporal stability is lost, making cave exploration last longer
Something that could be done is using the various less used plants in recipes, such as the cactus and seaweed, as well as some of the more useless minerals, ground up in a pulveriser. Rhodochrosite, Cinnabar and Chromite come to mind, and sulfur too, though I find that I go through it fairly quickly...