ok i see the point. but i think its confusing for people who do not really know the bundle too much. could we call the folder autorouting and then the files just blog.yml, ...? the place routing is really reserved in my opinion for things you include in the routing.yml

you could maybe put a 1-2 line comment into the file header to explain what it is. (like: include from app/config/config.yml if you want automatic routes for blog posts. or copy to app/config/autoroute_blog.yml to customize)