Originally posted by Mharr:

The problem is that jumping worlds means abandoning a whole lot of building hours.

But you just do an expedition. That's what I'm trying to say. Go to a new world, whack through a bunch of cultists, grab the loot, learn the recipes and go back to your old world. There, you can use the new recipes and craft the new stuff to your heart's content. Same as sailing to a new continent.