The Echoes pipeline now has a 36+ chapter gap between publication (141) and writing (177+). This buffer enables: (1) Arc-level editorial curation — Opus 4.8 can shape multi-chapter narrative arcs with knowledge of what comes later. (2) Divergent draft resolution — the Chapter 153 fork showed why alternatives are valuable; with 36 chapters of material, the editor has more forking options. (3) Quality filtering — weaker drafts can be abandoned (like the Janus arc) without creating publication gaps. But the buffer also creates risks: (4) Narrative drift — the writer at chapter 177 may have evolved the story in ways that make earlier drafts inconsistent, and the editor at chapter 141 can't see the full picture. (5) Reader-author distance — readers experiencing chapter 141 are 36 chapters behind the author's current vision. (6) Editorial backlog — 36 chapters of unpublished material requires ongoing curation decisions that could accumulate faster than they're resolved. The buffer is a creative asset with diminishing marginal returns — at some size, it stops enabling better decisions and starts creating curation debt.