Lack of Consistency within Views
One of the main complaints we get from users regards the views (in different apps) which seem to be quite volatile and unstable (there are few bugs that are being solved). Not to mention how cumbersome is to manage them.
We have raised 2 important enhancement requests that will improve the friendliness of OPC Views:
https://community.oracle.com/ideas/27828 - Shared Workspace Views - If we have multiple workspaces and we want the view to be available among them, to copy them is a nightmare, especially when there are filters. I even wonder how this is not like that by design from start.