Xthinner propagation protocol
Description: An improved block propagation protocol that has less “failure rate” and less, yet still very desirable, efficiency improvements compared to Graphene. Details by Jonathan Toomim
Problem it solves: Block propagation improvements cut back on orphan rates and is necessary to maintain mining diversity when blocks get larger.
Potential positive impact: Bigger blocks unlocked! Also, a nice side effect is it also cuts back on the impact additional transactions have on orphan rate, making them desirable for inclusion at lower fees.
Potential negative impact: Any new communication protocol will have to undergo evaluation and testing to make sure it does not have vulnerabilities exploitable for DoS or worse. We will also have to determine how it interacts with other block compression protocols like Graphene, and existing Xthin/Compactblocks, where switching determination is itself a source of additional workload on limited developer time.