Something fair to content creators, distributors, and consumers.
I, personally, would like to be able to purchase one time "unlimited" licenses (like buying a book or a DVD) that can be easily validated by the publisher's web API and enable non-subscription content to be served by netflix/hulu/amazon/etc.
To enable (for example) streaming an amazon show through netflix. Presumably, streaming providers would (assuming the cost on an individual movie/series basis would be too small to be practical as a single payment made by me at time of consumption) include low-cost "Bring your own content" add-ons to subscriptions that would cover distribution costs through aggregate balances between providers.