Assuming Somaliland keeps SSC then it'd be chaos the clans would fight each other. If they separate with only the isaaq lands+ awdal then they'd look similar to how djibouti is right now. As for Somalia 77 war probably wouldn't happen so Siad Barre would manage to stay in power past 91. My guess is that he'd be disposed of eventually but I doubt the civil war would go out of control and a govt would be able to be formed. Somalia would look better than it is today.