Looking into adding in a Backpack mod, then I should be done, barring some ore generation tweaks.
I'd look harder at the Force Mod if it didn't have a whole bunch of magical and mystical mumbo-jumbo. I really like the way the packs are done in that mod, with a card that can have Forestry-like auto-filling and auto-refilling capacity. But I really don't know about the rest of the mod itself, since most of it is very magic-based.
There's another backpack mod found
here released under the Commons license. It isn't cheap, but it works well, and I happen to like the 'not cheap' part. Emeralds aren't THAT hard to come by without Extra Biomes buggering over the odds of Extreme Hills biomes. I also like the upgrade mechanic.
Any ideas or suggestions for backpack mods?