Sadly, there still aren't any good reasons not to blob, so you end up doing it automatically because there isn't very much else to do. Want to spread your religion? Blob. Want to survive? Blob. Want more money? Blob. Want richer cities? Blob. Want more people? Blob. Want to have control of more holdings? Blob. The weird ahistorical Crusader-Chinese liaisons are still there, and the AI is still incapable of exploiting them. The Mongols are still a bunch of losers who can't even beat the Eurasian Steppe nomads. The nomads, in turn, get curbstomped by any Christians, even though in reality they continued their dominance until much later. Personal interactions still boil down to a genius eugenics program and weird 'lulz'.
It is still an entertaining game because of the atmosphere and the historical specificity, so it does stimulate the imagination. But it could have been so much more if they concentrated a bit better on peaceful activities and population, like in Victoria 2. Another good thing would be to increase inherent differences between provinces - at the moment, they mostly boil down to the number of slots, whether the province is coastal, and what feudal unit they belong to. Why can't places be made more distinct and individual? Even introducing trade routes made the geography much more interesting, so an important trading area like Trebizond is distinct from a backwater like Oleshye (at least it's reduced from the bizarre 5 slots to 1 in the update). The difference between a mountainous area, a densely forested area, and a steppe should be colossal in Medieval times, but it is barely a factor, except for military purposes - and then not as much as expected.