I think the filters within the custom fields and custom details is its strongest feature for us. So I would say, the more content you have, the more use you'll get out of Kapost, especially if you need to organize your content in a lot of different ways (as we do for our targeted marketing). We still format edit/publish blogs via WordPress (although we put the draft in Kapost), but blogs aren't necessarily our #1 thing. Perhaps, for people who are really blog-centric, another platform may be better. Kapost is really good, I think, for copy that has a lot of hands on it, and can really benefit from well-structured work flows and a really comprehensive metadata system.
Sets you up with a strategist. You are able to be in constant communication through Kapost with your strategist and send one another working proofs and comments.
Unity - it has made all our email campaigns have a similar look and feel. Kapost has shown results on the appropriate amount of images to use and the type of language that works.
Stay on track - each person is notified when the role before theirs is complete so they know when it is their turn to act upon something.
Search is valuable but the key words seem to take a while for the system to find, I have to use multiple word choices or switch to a specific collection.
I think some type of links from search could be useful.
We are using some other systems that might have replaced Kapost, but none of them had the workflow functionality we were looking for. So, we're sticking with Kapost for now.
The calendar view is a great feature and so are the custom views. It is relatively easy to see a clear view of what content the user is responsible for and then the due dates associated to it. The ability to create and update workflows for the team is easy to navigate and keeps us on track.
The reputation of the product matches up to its reputation as one of the leaders in the space. I love that you can share and access content at your fingertips from anywhere. The downside is that it does not have the prettiest interface but you can get over this with its functionality.
I've used basic tools like SharePoint in the past as a content repository, but it's not user friendly, not well organized, hard to manage and not well-suited for marketing content (version control issues, etc. ). Get a dedicated tool!