SharePoint Forms Designer usergroups form view layouts
The new feature of SharePoint 2013 Forms Designer is the ability to add custom form views for usersgroups.
You can add custom form view for distinct users and assign permission types. So you can create several edit/create/display views of the same form with minor changes for distinct departments of your company. If defined conditions allow user to have access to several views, the view with highest access priority will be displayed.
And you still can apply distinct fields view permissions to every custom view.
You can download SharePoint 2013 Forms Designer and customize distinct groupusers form view in the fully functional 30-days trial version.