Dimers Expert advice on YES Grandeur Savings Account

How is the YES Grandeur Savings Account? Is there a requirement to maintain a balance after the initial funding, and what special benefits are associated with this account as compared HDFC Premia or IDFC wealth ?

Branch manager earlier said that it is only for new onboarding customers and not existing but later said to make Grandeur account for existing customers as well. 

Also said no AMB/QAB after keeping the initial deposit for a period of 6 months?

1.)What are your thoughts on his words & account?

PS I do have a Zero balance savings account in Yes Bank

2.) In case my savings account is converted to Grandeur account , later will it become zero balance again in case of downgrade or not?

3.)Any suggestions / feedback for the account opening process welcome