Locomotives:
A more advanced and faster version of Minecart With Furnace which optionally can support FE.
High Speed Redstone Rails:
Faster Redstone Rails.
Minecart With Fluid Tank:
A moveable fluid storage. 10B/100B/1000B capacity.
Soulfire Campfire Minecart:
Nether variant of Campfire Minecart. Optionally can work faster in Nether.
Energy Minecart (if you add FE support):
Moveable FE storage. Capacity: 1000000FE Transfer rate: 100-500FE/t.
Functional Minecarts:
Crafting, brewing, sleeping etc
Stopper Rails:
Will stop minecarts. If powered with redstone signal will release them with a bit of momentum.
Loaders:
Will load minecarts with items, liquids(if you add liquids support) and energy(if you add FE support).
Unloaders:
Opposite of Loaders.

Maybe a guide book using Patchouli?
More efficient way of crafting rails?
Maybe minecarts with more item capacity?

ok good

Locking rails, loaders and unloaders, and fluid and energy carts have all been added.

The soulfire minecart and high speed rails already exist. I may look into the energy and fluid carts down the road, but not soon. Functional minecarts are a good idea, but seem boring to add. I'm planning on adding stopper rails and loaders/unloaders in the next update.