When considering the ore generation, please take in to account how hard it is to find Antimony for battery alloy. I've only found a small chunk of Tetrahedrite that I could cetrifuge/ore wash in a specific order to get a handful of batteries, and that's it.
BTW: the feedback site on your google site requires you to apply to join the group. i.e. "to post just click New Topic and then login with any Google Account." does not work at all. When logging in, the "New Topic" button just disappears and you need permission to post:
View attachment 13322
This should be fixed now. Although it is prefferable to post here, not sure why we made it :/
Anyway, I've got some bad news I guess, I haven't played Minecraft in a while and it doesn't look like I'll be able to keep the pack updated. I am trying to find someone to help maintain it, but I don't know if it's worth it really.