I am also looking at my notes: not to pre-empt ideas already. These are others that might only take a bit of editing because they are already basically written cause the authors are prolific.
1. Disease Michele?
2. Dormancy Maurice?
3. Polyploidy Maurice or Spunky?
4. Daylily anatomy and growth Maurice?
5. Fertilising Michele?
Also.
6. Unusual: variegated foliage, tall and small scapes and flowers, no flowers and unusual flower textures. All.
7. When is a daylily clump too big and how to deal with it and what to do with the spare fans.
8. Growing daylilies in pots.
9. Growing the original species: where it all started.