Re Blueprint snippets @Karton and @ronm6667 - that is exactly what we already have.
We are already working with blueprintue and have licensed his renderer, we support the visualization for materials and blueprint just like on blueprintue, we also have support for adding snippets for all kinds of other things such as C++, config, metasounds etc, as well as the ability to have up to 10 snippets a page, plus now with these latest changes we also added in the option to add in an extra picture or link and description along side of it all for those people who want to share a bit more info and context.
Check out the snippets in the left hand menu 
I agree and understand regarding the up/down vote thing but it is a tricky trade off where either direction leads to pros and cons. We might experiment a little with it over the next couple of weeks.