Membership: Multi-currency?

Are there any plans of adding multi-currency capabilities to the membership plugin?
That is, so I can define the currency for each subscription option, giving the subscriber a choice in which currency he will pay in. (As long as the chosen gateway can handle it, as for example PayPal can.)

I see that it's been thought of at some point, since the subscription levels table does have a level_currency field, but that isn't used now, only the global currency.

I did try to modify the code slightly to use the level_currency value if present, (adding it to the $prices array), but couldn't get that to work... I'm obviously missing something.
Isn't the `$pricing´ array used when creating the button set by the get_pricingarray() function?