I think there's certainly more push for it here, but this still creates a incredibly volitile situation in Central Europe that the Entente, Britain most, would seek to avoid. Germany is going to be in revolutionary turmoil, and ending the central government in favour of breaking up Germany back into its component parts is going to result in a communist government somewhere.
I think the plan going in, probably for a few years before the war ends, is the above discussed splits.
But then communist revolts show up everywhere and spook the Entente. They'll want bigger, more stable states, all of whom are ran by definitely
not-communists (or close enough to be easily pressured by the Etnente...so Hannover, the Rhine Republic etc).
The socialist unrest won't vanish either, esepcially as the far right Prussians and monarchists are so discredited by the defeat and subsequent destruction of the Empire. One of the reasons Ouster will do well later is because he'll have some credible 'I fight Communists' chops, but is also embedded enough in the Establishment that he could get away with talking to moderate left-wing parties.
France, Luxembourg and the Netherlands will annex territories and push for territorial security by splitting off a Rhenish state. Czechoslovakia and Poland will do the same with Silesia, and Poland will become suzerain over a East Prussian state. Denmark will at least want some shared controll over the Kiel Canal because it would restore their monopoly over Baltic acess and subsequently strenthen their position moving towards a united Scandinavia
Might want to get more land for the Netherlands and Luxemburg, though that's probably mostly shot down by the British in favour of reforming Hannover and doing the Rhine Republic, which is naturally going to be in France's sphere. Poland and whatever arises from Austrian Bohemia would certainly like to split Silesia between them but it's one of those regions most likely to be in communist revolt, so they won't be able to actually move in without a fight - and Poland has bigger ones in the East.
Denmark, as I said, depends on whether or not they want to join the Scandinavian union or not, because going back into Holstein fully means more Germans and committing to Danish nationalism rather than pan-Scandinavia. I suspect they'll kick it down the round by getting responsibility for a small rump state there, and then they'll have to do a referendum.
Since this is a obvious victor's peace and not one that aims to include all involved, the League may well just be headquartered in The Hague.
Depends what happens between 1916 and the end of the war, and who 'runs' the conference. The League might come into being but I'm not sure why it would, though an International High Court of Arbitration might be officially established at the Hague, and the trading standards that are contained in Versailles might lead to some kind of trade council too. Who shows any enthusiasm for international organisations that contain nations rather than charities though...not sure.
Honestly, Germany split by the wrath of the Western Entente does sound interesting, since Central Europe just turns into competing statelets facing revolutions hiring the services of freikorps who can them turn around, coup the government and in turn be invaded by the Western Entente just to weakily install the old government. Just imagine what kind of art this period would inspire?
It'll be interesting because of the variety of states this will create. Hannover will be a blend of British and German conservatism and liberalism, the Rhineland will be under enormous pressure as well as the Bohemian post war Paris scene. German Expressionism will no doubt be even darker and distorted.
EDIT: All this to say that everyone goes in with their own agedna and desires, if not proper plans. And then it'lll all fall part and be mushed together in the great game of diplomacy. Hopefully everyone walks away somewhat satisfied and whatever they've agreed doesn't cause a war in a decade or so.
Given we are talking about the TTL versions of the WW1 peace treaties, this low bar of success will take some doing.