I really dislike the current replacement system. I didn't like it in ACW2 or in the ancient games, but it didn't feel as tedious in those games either. It seems to me that Rise of Prussia had it right. You could control the types of replacements requested, such as heavy cavalry or infantry. It was graphically more appealing and easier to see. It also seemed like it didn't require so much micro management as WoN is requiring.
Additionally, the events seemed to be handled better in RoP. I liked the yes no choices, the historical choices offered in the scripting which seems missing here.
Finally, it would sure be nice if pop up reminders came in on events and diplomacy. Looking through the logs is a pain.
Was the RoP system disliked by the community? What gives?