Blorp dev here. If I’m understanding the problem correctly, there are multiple parenting communities that OP wants to combine into one. If that’s the case, you’re in luck because I just pushed an update to Blorp that improves support for PieFed’s multi community feeds. Someone just has to create a feed that combines all the parenting communities.

I would start by creating an account on PieFed.social, try and setup the feed yourself on the official PieFed.social website (you can’t create feeds through Blorp yet), and if you get stuck ask in !piefed_help@piefed.social.

Once the feed is created, you should be able to pull it up in Blorp. There is still a lot of improvement for feeds in Blorp, like listing all the feeds you’re subscribed to. Stay tuned.