Post-shaped by default
A normal note can keep expanding forever. That sounds freeing until the idea becomes a fog machine. xwrite keeps each draft in a compact, post-like format so your thought has edges. Edges make writing easier.
An infinite place to wander
Draft one version, a sharper version, a weird version, and the version you are almost embarrassed to post. Keep them next to each other. Compare them. Steal from yourself. That is where the good line usually hides.
Ready when the idea is ready
Copy drafts out, schedule them, group them by theme, or let them sit until your future self understands what you were trying to say.