I don't like it either.
Sure, egypt doesn't seem important, but removing the golden horde would leave a big hole in the east (after all their western border is far west of moscow). Also why swiss? they've no special units (since they're all merc), not much population, not really any impact on the rest of the world. And I can't see how scotland would be a separate culture, it's just a slightly more gaelic version of england with a different ruler, just look how unrebellious they and the english were to eachother after the unification. We can have many provinces in europe anyway (germany and north italy are going to need a lot of provinces).
I think the map borers should be sahara, the atlantic ocean, the pole sea, and far enough east the include all the land of muscovy at the start date but no further than that.