Would DHExchange be good to bring here or would that be better as part of this community?

My vote is strongly in the direction of keeping them separate:

• Data hoarding tech, methods, and news are a discrete topic from content exchange, and much lower volume. I would certainly unsub if the former were swamped by the latter.
• In spite of rules 1 and 3, that sub is very adjacent to copyright infringement. I'm always in favor of separating that kind of usage from the pure tech/process of storing mass data in order to limit the blast radius of any infringement enforcement fracas.

That sub has always been a thorn in my side, most use it for piracy requests and that's rather annoying.