My own vim-seek was created for navigating long sentences easily; criticmarkup is a superset of markdown for cuts and other edits, which I ported to vim. And vi

My own vim-seek was created for navigating long sentences easily; criticmarkup is a superset of markdown for cuts and other edits, which I ported to vim. And vimroom offers a IA Writer-inspired experience. For what Scrivener and outliners offer I'm working on something to scratch my own itch. What else would you find missing for a writing workflow?