Well, stronger and more stable states in Eastern-Central Europe, particalarly Poland and Hungary. Hungary has been absolutely devastated by the invasion which prompted the king to settle all sorts of people to keep the land cultivated. With no Mongols, we could see a more ethnically homogenous Hungary that can be a major player in the Mediterranean against Venice as well as having a more firm grip on the Balkans, maybe even countering the Ottomans more successfully.
I would say the lack of Mongols will have some butterflies in the Baltic as well, but I know precious little of the impact they had on the Northern Crusades.
In short: We could see an even stronger Poland and Hungary in the 1300's that can not only rival the HRE and Italian states as they did IOTL, but could very well surpass them by asserting control over trade in the Baltic and the Mediterranean.
Also, an earlier unified Russia?