Hi stephan,
It's a great idea to have partnership in such segments.
Steem while being used as a payment system should also supplement with reward system where even people who pay with fiat currency can get steems as rewards, thereby increasing community.
Also steem can be used in multiutility cards such as PARIS Pass.
And of course we want steem to be implemented in e-commerce giants such as Amazon.
Good luck for all the plans, would love to see them implemented.