Ability to change text for the "more" link in blocks

Issue Summary

For full compliance with WCAG Accessibility, there shouldn't be multiple links on a page that have the same text. It would be nice if the code for blog blocks allowed specifying an alternative text or, better yet, allowed specifying a token string, so that each block would have a different "more" string. Perhaps this is possible, but I'm not seeing it out of the box.