It's a matter of little importance, but I have one suggestion: the Poison Dynamite would be far more effective if it inflicted Wither instead of Poison. Not particularly because Wither can kill, but because Zombies, Skeletons, and Spiders (3/5ths of the surface's hostile mobs) are all immune to Poison. Again, it doesn't make much of a difference, but I thought you should know anyway.
Yep. I'm working to fix this in the future release.