Still using mypaint. I recommend checking out the Concept Design brush set. It’s got some outstanding markers and liners as well as a great penbrush. The git version has some nice goodies such as tabs and vector layers. I also spotted a new Ink tool in there that lets you edit the line flow with control points. It also seems the nice Kerhon brush pack was integrated as a new default brush group. Git log also shows a lot of activity recently.
Git mypaint can live-interact with other applications such as Inkscape and Gimp now.
Still no selections, but if you need those you probably also need diapers.