Congratulations, your score is very high. The key success are the product and service speed. So if you can improve these 2 points it will create your further success.
In order to increase your sample size for some touch points e.g. BD Gift, it would be great to change the method to Quartic. With this method it might be drive you get the higher score if you send the questionnaire after customers just received the gift. But should be started after update data of all prestige customers