fediforum, @srosset is coming to #FediForum and says:
All the FEPs are very interesting as simple ways to extend ActivityPub. I'm also naturally very interested by any subject around the interoperability between #ActivityPub and #Solid (as #ActivityPods developer). I'm also interested about how to use ActivityPub to bring Open #Badges to a social dimension (see this other project I've been contributing to: https://activitybadges.org)