Oh! And I should remind the thread- I was going back through and doing some rereading, and was at the point where it was decided to turn the battle wizards lose on sylvania- there are a few other threats that we've not been involved in. Ostland is said to be suffering from heavy raids, and drachenfels is said to be stirring. We might get called in, depending on if an 'all hand on deck' call gets issue.
For those with metaknowledge: we've butterflied away Karl-Franz and Gotrek. What are the major threats that they dealt with that might be coming up?
Lots of butterflies have happened and will continue to happen, but a non comprehensive list I guess of some stuff I guess:
Only Gork and Only Mork ritual disrupted, no Avatars as a result. Skarsnik was killed before he could grow up to be the menace he was, and Grimgor Ironhide while he might be a thing will not be nearly as ridiculously powerful as he is canonically. I don't know what this does to Wurzzag Da Great Green Prophet's whole Prophecy thing, but I think it messed it up?
Queek Headtaker is butterflied. We destroyed Clan Mors and Sleek Sharpwit was the commanding officer at the Yar battle, that he devastatingly lost so he's probably dead. We don't know what happened to Gnadwell, the leader of Mors who lives in Skavenblight, but he's probably toast considering his clan is destroyed.
In terms of threats Gotrek dealt with?
The Savior of Hell-Pit, The Destroyer of Under-Altdorf, The Killer of the Prophet of Sotek, The Summoner of Skarbrand, the Mighty Great Grey Seer Thanquol. He's a Saturday Morning Cartoon supervillain who constantly fucks up. A Slaan once met him and looked into his future and decided to keep him alive because he would cause more damage to the Skaven Under-Empire if he was alive then if he was dead.
As for Karl Franz, there's way too much to cover I'm sure and I'm not a lore buff, but there's a bunch of threats that may or may not pop up. The most notable of which is the Everchosen Archaon. Whether he'll be the Everchosen or not, and when he'll pop up is unknown, but Boney has confirmed the possibility of an Everchosen popping up at some point if we live long enough, which is definitely the biggest threat we'd have to face. Aside from that there's a number of miscellaneous threats that may or may not pop up, but for the moment the Empire isn't exactly at war. Well, not a full war but we're at a sort of cold war with Marienburg and high tensions between Ar-Ulric/Grand Theogonist and Nordland/Middenland.