This could make a very good game with WW 1 GG engine, lots of players (Serbia, Bulgaria, Greece, Montene., Ottomans) with two wars against different ennemies. Just a suggestion, as there is still work to do on current game
Maybe something for VGN Both Blakan Wars can be seen as a prelude to WW1 where former allies (Bolgaria and Serbia) became enemies afterwards.
TOAW covered it nicely, but AGEOD can/could do it better.