I mean the Ottoman's probably could due with some internal expansion, which is kind of happening given migration and attention their neglected territories are receiving, which TBH is probably worth far more than massive expansion.The Ottomans are not remotely secure or stable enough to begin thinking of expanding, let alone bizarre fantasies of ethnic cleansing in the Caucasus.
I'm enjoying this timeline, but let's be clear that them turning around to the extent they have is already pushing up against the hard limits of plausibility of what could be achieved in a decade. That's not a criticism! It's the premise of the timeline, and it's a fine one.
But them entering the war and going on a conquering spree in the aftermath changes the thread from 'what if the Ottomans gain a crucial decade of stabilization' to 'The Ghazis Ride Again!'
That's not remotely as interesting.
After all enver pasha had a massive ''empire'' in central asia, it lasted barely anytime and most of it was very spare in population.