Two possibilities - either shunned by both sides our courted even harder by both sides.
If 'A', more reliance on domestic development and cooperation with other non-aligned states, and eventually, maybe a nuclear-capable Orao, or a joint YU-SA effort to develop a new fighter, be that Novi Avion or Carver...
If 'B', things could get really interesting! Imagine some Su-24s escorted by F-101s, or some A-10s with MiG-29s for cover?
Okay, maybe this is implausible but it could be fun...
... all that said I think the likeliest result would've been essentially the same as India's path.
.....aaaaand, when the Secession Wars begin, they're a much nastier thing, and those lovely cities like Zagreb, Sarajevo, Belgrade, Osijek, Banja Luka and whatnot all get hit with tacticals, and the entire ex-YU ends up becoming like a live action game of Twilight: 2000 on a grand scale...