Firstly, I'm not calling
you stupid when I say this, I just want to make that clear. But all the speculative ideas you've posted here are utterly stupid.
1. Turalyon is a Paladin, he cannot "dismiss" a reigning monarch who also happens to lead the entire unified Alliance, enjoying the support of all its racial factions and leaders.
Turalyon is the Supreme Allied Commander and High General of the Alliance forces. His command was above any one monarch.
"Turalyon was named Lothar's successor as Supreme Commander by the monarchs of the Alliance"
wowpedia
He was given the right to command all the armies of the human alliance as he sees fit so Varian can try and refuse but turalyon still has military seniority
2. Magni is not sealed in a diamond prison, he has been turned completely to diamond. He is dead. That's not to say he won't come back, just a minor correction of facts there.
"
Status Petrified;
Spirit lingers beneath Khaz Modan,"
wowpedia
So not dead just waiting for his body to become free
3. Millhouse Manastorm is a joke character.
I agree and disagree, He has been in the game since tbc and could be a character that the developers might think deserves a lore boost.
4. The Worgen curse prevents those hit by the Forsaken Blight from being risen into undeath, but they still die nonetheless.
Give up on Gilneas & Lordaeron already, you're never, ever getting them back.*
If that is the case then lore is dead, you have to fight for your homeland against all odds. This is warcraft
5. Maiev Shadowsong is a murderer who attempted to frame another Kal'dorei faction for her attempted genocide (or possibly fratricide?) and sabotage of the reinclusion of the Highborne into Night Elven society. Jarod, weakly though understandably, did not kill his demented sister as he should have. If she returns, which I expect she will, she will be an antagonist.
I never said you ally with Maiev, I said that her actions make some of the night elfs question there current system of government, and Jarrod yeah questline involving you aiding him hunt down his sister would be amazing
* I know they re-captured Gilneas City, but the zone is still technically contested, ongoing battles between the forces of the Forsaken supported by the Horde, and the forces of the Alliance.