The plan was to finish uspell, then use that as the backend for a new, better-thought-out GtkSpell.
Today I got mail from the Enchant developer, who has created a near-identical system to the uspell I had planned, and just tonight I got a patch to GtkSpell to use it. So I guess I don’t need to do anything, yet.
The plan, as before: finish LogJam release, first. Mustn’t start other projects.