> threads has been moving at a glacial pace and I'm way out ahead of any thing they've indicated even thinking about

I'm not so certain that's an accurate statement. Threads launched only 5 months ago, and they've made some fairly large progress on things users have requested the most, and there's a number of things that are currently being tested in certain parts of the world (ex: trends).

It'll be interesting to see if they can continue that pace into the new year.

Personally, I just want to see a lists and bookmarks feature, which they've confirmed is in the works.