I'm really looking forward to 'Project: Black Flag' aka 'Tales of the Valiant' aka 'CORE Ruleset', which a like-like to 5e (compatible in regard to power-scaling and adventures) that's in development right now. My community plans to switch to it as soon as it's out as they are cleaning up a lot of rules and pushing for a world-agnostic system that feels a lot better from both a player and a DM.