"Rumpelstiltskin" modes
    - character
    - word
    - line
    - activity
    - symex
    - view
    - window
    - tab
    - buffer
    - text
    - file
    - history
    - application
    - system
Meta modes and metacircular operation
    - mode mode, tower mode
    - reflect ground in meta modes
    - isomorphic tower parsing and serialization to string
    - tower and complex as editing ensembles
    - chain of reference to ground
    - metacircular operation of modes via "monadic" side effects
    - define default editing structures including e.g. lisp tower
UI design
    - standard entry and exit semantics via enter and escape
    - linguistic keybinding conventions - verb, superlative, etc.
    - canonical entry into modes via s-*
    - mode recall and prioritization
    - metaspace navigation
Modal framework
    - Modes <-> levels
    - "chimera" modal interface abstraction layer
    - evil and hydra adapters for chimera
    - mode registration and definition