If WWI is avoided in 1914 and Hungary tries breaking away in 1917, what's the endgame of WWI?

[Futurist]

If Franz Ferdinand and his wife survive their assassination attempt in 1914 and Hungary tries breaking away in 1917 (as a result of the Hungarian elite's fear of Franz Ferdinand and his plan to implement universal suffrage in Hungary), what is this TL's World War I going to look like?

Also, what is the endgame of this TL's WWI going to be?

P.S.: I am anticipating that WWI will break out in 1917 in this TL as a result of Franco-Russian support for Hungary and German-Austrian opposition to Hungarian secession (or Hungarian non-renewal of the Ausgleich, if you prefer).

 

[Emperor of Wurttemburg 43]

So the Hungarian elite would get soldiers to fight a war to prevent themselves from being able to vote?

 

[Visigoth Panzer]

The other non-german peoples would also rebel after the Hungarians, pretty much turning the war into a massive rebellion with outside intervention. If it goes down like WW1 (with Germany supporting Austria and invading through Belgium, brining Britain into the war) then Germany would be defeated and it would pretty much be the same as real life except Hungary would be treated like an ally and might get to keep some parts of translyvania and other territories. If Germany wins, Austria may still be partitioned between Germany and other puppet states (hungary, maybe Croatia and Poland).

 

[Futurist]

So the Hungarian elite would get soldiers to fight a war to prevent themselves from being able to vote?

Not themselves, but the Hungarian people. Please keep in mind that denying suffrage to most of the Hungarian population was how the Magyars were able to maintain their dominance in Hungary. Magyar dominance would have been much less likely with universal suffrage since Magyars only made up around half of Hungary's total population back then.

The other non-german peoples would also rebel after the Hungarians, pretty much turning the war into a massive rebellion with outside intervention. If it goes down like WW1 (with Germany supporting Austria and invading through Belgium, brining Britain into the war) then Germany would be defeated and it would pretty much be the same as real life except Hungary would be treated like an ally and might get to keep some parts of translyvania and other territories. If Germany wins, Austria may still be partitioned between Germany and other puppet states (hungary, maybe Croatia and Poland).

I think that 1917 would be too late for Germany to invade Belgium due to the completion of the Russian Great Military Program by that point in time.

 

[Visigoth Panzer]

I think that 1917 would be too late for Germany to invade Belgium due to the completion of the Russian Great Military Program by that point in time.

The schlieffen plan was already obsolete in 1914 but the germans still used it because they thought it was good enough, this line of thinking may still be carried into 1917. If Germany doesn't invade Belgium, then they would be commiting to a two front war with no plan for quick victory, which would be similar how the normal ww1 went, just without british involvement.
Worth noting is Serbia, Montenegro, Italy and Romania may join the war on the side of France-Russia to gain austiran territory. Which could again lead to Bulgaria and the Ottomans to ally with Germany (like in real life). Although interestingly if Germany doesn't invade Belgium, Britain may be more sympathetic towards weakening Russia and remain neutral as long as france's sovereignty isn't threatened.