Welp, 70 years in and going strong (or at least it seems like I am)! Went with the Yeren start, which was pretty tough and had a few hurdles I didn't anticipate. I didn't realize I would have to reform my government before taking the Unite the Jurchen Tribes decision in order to get the Muslim tech benefits, and I didn't realize that if I stayed at peace for too long, I'd start popping out pretender rebels every 4-6 months (or less). Nevertheless, Yeren grew, and its Manchuria successor continues to flourish:
In the picture, Korea, Mongolia, and Buryatia are my vassals, as well.
I've completed the Administrative ideas (of course), and am finally coming up on unlocking my second idea group. I'm not sure what to end up going with on this one, though. Influence was my initial preference, but I'm wondering whether or not it might be better to pick up Exploration or Trade, or even a non-DIP idea group entirely. I feel like I can skimp on the MIL ideas for a while, but I could see picking up Humanist, for example (and if I don't pick it up next, it'll almost certainly be Idea Group #3).
I'd like to get Exploration eventually in order to get my Siberian colonization going, but I don't know how pressing that is—Muscovy's getting kicked around pretty hard, but I don't know if I still need to concern myself with cutting them off. They've taken six total ideas, so they've unlocked their second national idea—still a long way to go before they reach the Siberian Frontier at NI #5.
For additional context, my near-term plan is a war with the Oirat to force-feed as much as I can to Mongolia before diplo-annexing them. By then, my truce with Ming (I've already taken Beijing) will have expired and I will hopefully be able to beat up on them for another handful of provinces in northern China—I'm trying to get all the provinces I need in order to take the Repair the Great Wall decision, and also want to take the Construct the Forbidden City decision before I switch over to Qing. Korea's going to get diplo-annexed at some point, but I don't know when that's going to be, or if it should even precede annexing a well-fed Mongolia.
Thoughts from the ever-useful peanut gallery?
P.S. That Burgundy.