Don't allow a POD to be created if it contains undefined variables.
Currently, a POD can be created that contains Tags which refer to variables defined in other Tags not included in the POD. Then those Tags fail when the POD is used in another template. Request that when a POD is saved, Report Designer checks whether there are undefined variables in any Tag, and if so, rejects saving the POD with a message like "POD contains undefined variables."
We have reviewed this idea internally but unfortunately it has not been accepted. Since the idea has not received sufficient votes since it was entered and also since we have some other tools in the product to verify template quality we will not be working on this. Thank you for your suggestion, and please enter any other ideas you have to improve the product.