I'm currently working on moving from CoFH World to Ore Veins, and there's one feature I really miss. In CoFH World I can separate the objects into separate files. This really helps with managing large projects and just generally making things readable.

To check if this was a feature, I tried putting another file in the oreveins folder called ore_veins - Copy.json. Then I put a massive vein with a 1/20 change of spawning per chunk. These blocks should have been everywhere but I didn't find any.

That is currently not a feature, but is totally doable.