Ever since I started contributing to Kate there has been one feature request that was being requested in almost every blog post or discussion about kate: multiple cursor support. I am happy to say that after 3 or 4 days of really pushing myself to implement this and address all the issues we just merged it (KDE Frameworks 5.92)! It will be available not only for Kate users, but for KDevelop, KWrite and any application that uses KTextEditor as its editor component.