I have been playing several ranked games lately with Incas, and I am losing a lot for the same reason, I have no viable anti-cavalry unlike all other civilizations. Although they have Plumed Spearman and Ball Warriors, they are not effective against cavalry at all.
If we analyze, the Spearman even though it has more HP than the European pikerman, generates much less damage and also costs a lot of food (in my opinion, despite being an Inca unit it has a very high food cost), they nerfed a long time ago its siege capacity, because as it was not very efficient against cavalry, it was used more than anything to besiege.
On the other hand, we have the ball warrior, this unit already made a topic talking about this man.
I disagree on the idea of taking out the multipliers against ranged cavalry, although I must admit that the ruytier and dragon formations are destroyed, but cavalry units in general destroy them for two reasons, first because it cannot micrea like dragons, and second because they have resistance against range and not against melee, therefore they are more efficient against heavy infantry and not against the melee cavalry itself. I believe that this can be corrected and also what is suggested in the topic above, if only the resistance at a distance was changed, it would be changed to resistance to melee.
Finally, just from experience, I can say that I was able to repel the melee cavalry in general thanks to the Pukara, and the fact that I agreed chimu runners and bola warriors, this is a bit sad, it does not fit the battles we were used to in the previous version.
I do this topic, because a little time ago, a German and a French beat me based on heavy cavalry, and although I tried to use ball warriors, chimus and spearman to confront them, there was no case, the uhlanos and the cuirassiers did it. they ate alive.
Summary: Reduce spearman costs and change warrior ball resistance from ranged resistance to melee resistance.