>>27536810Personally I think just 2 evos each would be better, but I could see 4 happening solely because of Rockruff. It wouldn't make sense for the starters and Rockruff to have a different number of split evos when that's part of the secret they share.
The fact that Rockruff goes out at night to evolve means it likely can't just have two evos, one for during the Day and one at Night. So 4 makes sense, and again, if Rockruff gets 4, the Starters should, too. Otherwise, Rockruff's secret has a lot more in common with Oricorio than the starters.