Please update Layout Manager to reveal via tooltip or augmented treelist to show us what field is selected

Hello Drew,
I remember that you already logged a similar request in the past: Please augment the field chooser in the layout tool. While your suggestion looks useful, I am afraid we do not have any news on it for now.
The items corresponding to data fields within the layout control's customization form have no any knowledge of XAF features, e.g. a full property path. So, it would be necessary to provide this additional information into the control from XAF. You can see how the customization form can be accessed in XAF by checking the source code of the WinLayoutManagerController class and probably implement required adjustments yourself.

Ist not really hard in the meantime to implement this in Win.UI (only runtime, not ME).
hope this helps…
Implement your own LayoutManager, eg. public class MyLayoutManager : WinLayoutManager
    {
In the ctor Register your control item wrapper -> this.layoutControl.RegisterCustomPropertyGridWrapper(typeof(XafLayoutControlItem), typeof(MyLayoutControlItemWrapper)); now in your wrapper you can implement whatever properties you want, i did this (and more):
public class MyLayoutControlItemWrapper : LayoutControlItemWrapper
        [Category("XAF")]
        public string PropertyName
        {
            get
            {
                var xafLayoutItem = this.Item as XafLayoutControlItem;
                if (xafLayoutItem != null)
                {
                    var editor = xafLayoutItem.ViewItem as PropertyEditor;
                    if (editor != null)
                        return editor.MemberInfo.Name;
                }
                return null;
            }
        }
        /// <summary>
        /// Gets the name of the class.
        /// </summary>
        /// <value>
        /// The name of the class.
        /// </value>
        [Category("XAF")]
        public string ClassName
        {
            get
            {
                var xafLayoutItem = this.Item as XafLayoutControlItem;
                if (xafLayoutItem != null)
                {
                    var editor = xafLayoutItem.ViewItem as PropertyEditor;
                    if (editor != null)
                        return editor.MemberInfo.Owner.FullName;
                }
                return null;
            }
        }