The soviets had years longer than the whites to play that out and there were plenty of cruel bastards on that side of the civil war so im not convinced its quite an adequate point of comparison. Not to say the Soviets weren't horrible,they were, but we truly can't say if a theoretical white...
The crimean goths would be your best bet, they stuck around thr longest though by later years their language was heavily mixed with the language of the neighbouring crimean tatars. Something would need to happen to avoid their assimilation, like byzantine rule being maintained as mentioned above.
Austria Hungary will probably keep trucking along for a while longer, if only throug inertia and German support. Not sure how much of a lifespan it has in the long term though.
Try not to take things too personally, as that whole mess earlier showed, there's only so much you can do to convince people and letting yourself react to every person that doesnt agree with you is just gonna burn you out In the long run.
An ascendant Qing or Shun probably wouldn't want the Japanese in Korea either so continued conflict with a Chinese empire if not the Ming is pretty much inevitable
Your just going to get mods involved if you continue. Leave it and move on so your not hurting the timeline, this is not a forum for these kind of discussions, if you thought it questionable than contact a mod yourself.
My worry for the initial plan was not that the Germans wouldn't order it but that the crews would be unlikely to go for it. Having it start but essentially collapse before it went anywhere due to crew unrest and quick British maneuvering seems a logical outcome to me.
My opinion is that the most likely result is a deeply disliked status quo ante bellum , at most a minor victory for one side with little substantial change compared to otl versailes
I as someone who also sufferers from anxiety I can understand how difficult it can be. Ultimately, you won't be able to satisfy everyone no matter how much research or evidence you get as personal opinion dominates and people can get very unpleasent when their beliefs, even relativelly...
It's certainly similar but there's enough difference in the details that It's not a copy paste job so no apparent plagiarism. They will need to vary things up to ensure it stands out though.
Honestly, losing some Christian territory is probably for the best, it'd just going to be an eternal source of unrest and instability and therr isn't really a way to fully solve it given how much resentment of the ottomans there are In those territories.