Steady progress.

My rudimentary knowledge of NK politics tells me that Kim is positioning himself to take on a largely ceremonial role after reunification.

President emeritus. Defender of the faithful. Whatever.

Something that gives him face and status but no real power over the unified country.

I would guess that it'll be something focused on NK reconstruction as he's the best bridge between SK and China and everyone would feel better having him as a buffer.

https://www.cnbc.com/2019/04/12/north-koreas-kim-jong-un-shuffles-leadership-and-consolidates-power.html