Database access is highly restricted with PIM. If you're using the cloud version, you probably won't have database access or a view of it. If you're wanting a customized application, you can develop the out-of-the-box PIM solution with a little bit of customization here and there without even needing a database. That's a very big drawback. As a developer or as an architect, you need to have a data model. I know some people use it without database access and the issue is that they don't know what that data model is built on other than just seeing it through UI tabs. The one thing I'd really like to see is for the solution to be made scalable. 

Workflow & UI

Additional pre-built, "plug and play" out of the box functionality should continue to be built.  Additional pre-built capabilities and connectors to better integrate with social product data for ratings/reviews, additional Ecomm and external DAM solutions.

Its look and feel needs improvement. It has a lousy look and feel.

Informatica PIM is designed specifically for the retail industry. They need to make sure that it is also applicable to all the other industries and verticals.

The job scheduler needs improvement.

They need more feature flexibility, as it is not fully developed.

From my point of view, a quick response time is needed when searching for an item.