It could have the interesting implication that Russia uintentionally helps create a Jewish state in an area where there otherwise would have been states with an Orthodox Christian majority. The Jews might come in a situation where they might depend on the Ottomans or a post-Ottoman Turkey, which might be another reason why the Ottomans could could see it in their interest to create such a state, as they would realize that they would probably lose it anyway, so why not create a Jewish puppet state?
Albania was cut off from Istanbul hence why they declared independence. If Bulgaria were to occupy Thrace and Macedonia is largely in tact, the Jewish population could declare indepedence... could. Although this would not be taken well by the Ottomans but to keep a buffer between the Balkan States is another thing. Within a decade, Istanbul would support such state regardless. When Turkey/Ottoman Empire regains Thrace (most of it) and have their border with this Jewish State. There might be a triple Balkan alliance between Turkey, Macedonia and Albania against Greece, Bulgaria and Serbia. Of course this would be in theory. The PoD must be as early as 1878, after the Russo-Turkish War and the Berlin Conference. Between 1878 and 1912, the Jewish population migrating to Macedonia must be at least 500k. This alone is hard. How do you convince so many Russian Jews to move to Macedonia rather than Palestine? Advertising about Saloniki I guess but still, will they be convinced? The Jewish Population of Macedonia must be at least 40%. Considering the history of Greece, Serbia and Bulgaria with their Turkish or Muslim minorities, the Turkish and Muslims in Macedonia can be convinced to support this state if a return of Ottoman Rule is no longer an option. The treatment of these Muslims is not certain. They might have equal rights to keep Turkey pleased or they might be discriminated if Turkey is too weak and this Jewish State has Powerful Allies such as the UK. Albanian Muslims might be 'screwed' though. If Albania were to be created, these minorities will be discriminated and probably expelled to avoid loss of territory. Unfortunately, expulsion of large number of Greeks, Bulgarians and Albanians is going to happen if this State needs a chance of survival. More human catastrophes in the region that already has such things. If WWI were to happen and Germany still loses and turns Nazi... I really wonder what is going to happen with this state...