I have two games going in 1.23 right now, as Ethiopia and Venice. In both games, I have wanted to ally Muscovy, but found that they had too many relations. I realised that this is because they have too many diplomatic relations, as they have integrated none of their vassals. This I'd despite the two games being in the 1500s and 1560s respectively. I have also noticed them starting to annex the vassals, the switching midway through to a different one or just stopping altogether. Has anyone else noticed this? It's really holding them back, they have been over the relationship limit all game and are 7 techs behind diplomatically.