Wanted: A "Simple" minecart integration mod.
Reason: Vanilla minecart integration leaves a lot to be desired: In order to make a loader /unloader a number of vanilla hacks need to be done to stop railcarts so that they are simultaneously on a detection rail AND a booster rail, such that the detector rail does't trigger the booster rail, or the minecart is prevented from being boosted, AND this cluster fudge needs to be readable by comparators.
The gold-standard for railcart unloader and loaders is of course Railcraft, but as a big content mod its inclusion in modpacks, just for the purpose of providing loaders and unloaders, is excessive as its machines and powergen might not be visually or theme appropriate to the modpack.
So, what is required, is a mod that can be added to any FTB pack, that adds simple "load" and "unload" semantics to railcarts that bypasses the need to stop minecarts on slopes, halfway over booster AND detector rails.
The simplest solution might be a "smart"
Buffer Stop block, that could be made by combining a detector rail + comparator + ingots - that would emit a redstone signal to an adjacent powered rail block when a railcart, an inventory above, and an inventory below, met certain conditions.
* Loader Variant 1 would emit a redstone signal to send the minecart away if the minecart was full (above configured capacity)
* Loader Variant 2 would emit a redstone signal to send the minecart away if the minecart was full or the inventory above the minecart was empty.
* Unloader Variant 1 would emit a redstone signal when the minecart is empty
* Unloader Variant 2 would emit a redstone signal when the minecart is empty or the hopper below the minecart cannot accept any more items.
Other mods could be used to provide filtering options, that is not a requirement here.