realistically speaking with sun jian's untimely death (sun family true protagonists of this era), dong zhuo's position would be further entrenched and yuan shu would lose tremendous legitimacy. Yuan Shao would likely become the premier head of the yuan family, and, as one of the only people with enough prestige behind him, would likely pacify much of the north.
ultimately dong zhou would fall, cao cao would likely never have the chance to become great, and the yuan family would quickly take over all of china.