Try doing some dummy award searches that fit your travel patterns while signed in at united.com, and then do the same searches while not signed in. For me, many if not most of the seats from my airport to UA hubs are only available in XN inventory and therefore only available if I have the UA card or UA status. You can downgrade the CSP to CS, get a retention bonus on the UA card and open an Ink card to keep your US points flexible.