I'll seriously consider supporting a National Identity card if it will be developed by private enterprise for Government and incorporate the following. (I've used Australian terms, but hopefully they translate OK)
Passport
Employment ID and security access code
All credit, debit, charge and in-store cards
Medicare ( Health Insurance )
Health , Pension and Senior Citizen entitlement stuff
Driving, flying, yachting and related licences
Social Club and Motoring Organisation membership
Put that lot on a single card and you will get my attention.
Otherwise forget it. It's just another card, and I have too many now.