I haven't posted anything in quite a while and plan to start posting more often again. I've got loads of new code related ideas that I will be posting in the not so distant future, but for now, we're going to show a popular family editing trick to get elements to display in RCP views when their base geometry might dictate otherwise.
Plan regions are not necessary to solve this issue...
This trick is also handy for furniture elements (tables, etc.) that you wish to be visible in RCP views even though they don't contain any visible geometry above the RCP view range cut plane.
Open your family in the editor and add a new model line to the top of your family so that the top of this line will always extend just beyond your view range cut plane in the project environment. Be sure to set this model line to invisible so that you don't see it anywhere in the project environment.
Your element will not be visible in an RCP view with a cut plane higher than the top of your geometry since the model line passes through it in the project environment. Revit will display the whole family for you.