I'm playing together with a friend this weekend, and it's somewhat of a hassle to either research everything twice for the both of us, or have one person learn all BPs and be the dedicated Crafter.
Hence this suggestion: Shared BPs. Could either work by sharing them across the team functionality of Rust itself, or maybe via Clan feature (Clan Tables in Bandit Camp and Outpost). That way either person can learn a BP, and all players within the same group get access to that craft, eliminating the duplicate cost of research.