I believe that’s less desirable (perhaps significantly less desirable) for accessibility, since the link content is now more complicated. You’ve moved the content to the “title” attribute, but I don’t think screen readers use the “title” attribute to mean “read this text instead of the link content”.
I think that also makes it more difficult to select text. See also https://discourse.phabricator-community.org/t/drag-by-the-title-is-confusing/3275 for a concrete example of a user finding drag behavior for links confusing, albeit in a different context. In fairness, the current approach is also not great about text selection. And text selection is not terribly important, although it’s also a feature I’m not excited about breaking arbitrarily.
It also means that we need to duplicate the CSS styling for the actual header piece which we’d like to visually look like a link. This isn’t a big deal, but is a tradeoff.