Swung by House Cannith and peeked into the crafting device, and saw some nifty things:
1) Crafting traps/grenades no longer requires soul gems. Cool - this means I might actually make some on my rogue at some point. No word yet on whether they've been upgraded enough (if at all) to be useful, but definitely worth checking once my character copies. They use lesser essences instead - excellent change, it might encourage somebody to actually use them.
2) +1/2/3/4/5 Thieves Tools are craft-able. Take a few trap parts, add a +1/2/3/4/5 weapon, and voila! Cool, I guess, although I never run out of +5 tools to begin with.
3) "Module Construction" for upgrading Iron Defenders? Magical handwraps + mechanical trap parts. Oh yay, I can feel the Grease DCs shooting through the roof
