It's the combination of the Islamic schools, the hijab, the women's education, the bilingualism, and the Marxism - one to three are probably not going to be popular with the Islamists in the slightest, four is probably going to rile up the nationalists as a state subsidy to Copts and Europeans as well as a dilution of Arab culture, and five has its obvious implications for Islamism and nationalism alike. Leaving the Islamist schools would allow for an opt-out, which isn't necessarily ideal but would have been practical. State funding would have also allowed the government to still have a strong hand in curriculum. This obviously has implications for party factionalism - but beyond that, we might also be starting to outrun our own base. The general impression I get is that even though the populace is generally down with socialism, they're still mostly fairly devout and see socialism as a secondary position to nationalism. The Marxist turn, even if something I'd personally like to see in the long run, inverts that relationship. Might not be something the public is enthused about.
So yeah, I do imagine we'll get a serious party split over this. The Islamists and party right may start to wonder how many more choices like this we'll be making and if they actually have a place in the party at all - and if not, whether they'd be better off either outside it or trying to make a play for power themselves.
Guessing we'll have an opportunity to either make serious concessions next turn or see the struggle escalate.