I calculated Wild Plains vs Whitehelm as your home kingdom given equal star levels on both as an approximately 2.2% difference in weekly glory from tributes given equal star levels on both kingdoms. This could amount to the difference of less than couple hundred weekly, or almost nothing, depending on how often you collect. It becomes more significant if your Whitehelm is your highest progressed kingdom, or if you were considering switching to a kingdom that has no glory tribute. If you had only whitehelm 7 starred, with your next best choice at wild plains/pans vale 3*+, it’d be a loss of about 7% of your weekly glory tributes to choose either one of those instead, but closer to a 3% loss to choose one of those if either of both of them are 7* (and a 2.2% gain if you had wild plains/pans vale 7*'d but not Whitehelm).
Not blaming you for choosing one way or the others, because a loss is a loss, however small, and a counteroption should be supported by gameplay (eg., for the traitstone problem, or at the very least made not to matter) but you should know the numbers.
I’m still sticking with Wild Plains for now. Here’s hoping they do something about the traitstone problem soon.