GitHub issues is great, until and unless you work for a company that doesn't allow 3rd party access to the Org where all your repos live. I want and need a one-stop shop for my Kanban board and I could accomplish this using GitKraken Boards for instance, but because of where I work, they disallow GitKraken access to my repo issues. So now, managing a dozen or more repos with an issue tracker for each one separately, is frankly, a pain in the ass.