TL;DR
Allow people to share blueprints without mods, forums, or anything like that.What ?
Baically, i am suggesting something somewhat like steam workshop, (but hosted on factorio servers so switch users can access too).It is a new submenu in the Blueprints menu called "Blueprint Hub" where you can share blueprints with custom tags, then people can search for blueprints with tags, names, or description and based on newest, popular, and most downloaded.
Also, people can access from singleplayer OR multiplayer.
Why ?
I think The Blueprint Hub will provide better accessibility to people without access to the Factorio Forums, Multiplayer, or a PC.Also, you can download Blueprints from people that don't play Factorio anymore.