Get well soon and good luck with your turn. There's still plenty of time for you to adventure.
Regarding that world, if you still have it and still want to play, you should try using
set-timeskip-duration -ticks 0
which instantly lets you play the game instead of doing the two weeks crawl.
And did I read that right? Is that a one million year world? If at all possible, would you mind uploading it? I doubt my RAM could see Legends, but I sure hope it could.
My closest world to epicness was a 3k+ year pocket world I was genning out of curiosity, I had it set to 10k, but it was total war for all its history, with at least 3 races involved (gobs, humans and elves) with border settlements exchanging owner every few years. In most other worlds, there comes a point where things go static (or the necro wins), but this kept going... then gen crashed on me and I could never regen that particular world or one like it (it was relying on skipping and not skipping worlds and for some reason it didn't get to that world anymore). I keep regretting I didn't hit enter/escape and save the world in that 3k year.
So I've been experimenting a little, trying to familiarize myself with Señamatem, and I've discovered interesting things. It seems the blighted thralls aren't in the mead hall when I claim the site in fortress mode (that might change when I play Adv mode, but I haven't tested that yet). Additionally, some of the legendary mercenaries seem to be in the mead hall, so they might make fast work of them if they all find themselves in the same place. I've also taken a glance at the new districts and what I've seen is awesome. I've also noticed that most of the items associated with Lurker Onecbehal have been "stored"... did your humans find my stash, Unravaller, and then put everything from it in storage stockpiles? Because if so... I might take some loot back myself, hmmmmm?
Other interesting things is that there seem to be persistent citizens that haven't nominally come in contact with adventurers and are not proper historical characters either in LM or LV, but continue to exist under the same name between saves as far apart as the 7 years between 922 and 929. They have the same names, the same features, they even live in the same houses, but interestingly, different dates of births depending on the time I reclaim. They are also not considered as part of ANY group, including of any civ. This "semi-stability" seems to be once more the hand of adventurers. When I reclaimed the 700 save several times, it had hundreds of monks, but their name would change at each reclaim, which means they were purely "abstract". But it appears as the first adventurer reached Señamatem, the "quantum uncertainty" of the site coalesced (mostly) into a few dozen citizens at most. The blight of course weathered that number lower still.
One more thing, I have most of the archived saves from turn 53 upwards, but could someone who has them all (Bralbaard maybe?) upload all the saves on DFFD for posterity and testing purposes if possible?