Thanks for the kind words achikin! Blueprint doesn't include anything to simplify layout. However, if you're able to only support relatively modern browsers, flexbox [0] is a great CSS feature that really makes layout easier. If you're looking for something like the traditional CSS library grid, you can always grab it from a different library, like PureCSS [1], and use it side by side with Blueprint.
[0]: https://css-tricks.com/snippets/css/a-guide-to-flexbox/
[1]: http://purecss.io/customize/#individual-modules