WooCommerce Subscriptions

PROBLEM
The Billing Intervals on WooCommerce Subscriptions are currently set to between 1 and 6 (days, months, years).
My Subscription Product has a renewal interval of 10 months (this isn’t adaptable as my whole company concept relies on this).

CURRENT WORKAROUND
I’m currently using a free extension from a competitor (Subscriptions for WooCommerce by WPSwings), which allows me to choose a) frequency (day, week, month, year) and interval (any numeric value) and integrates seamlessly with my existing woocommerce functions (products, account management etc)

PROPOSED SOLUTION
Whilst this provides the solution I need, I would like to be able to consolidate my payment and billing with one provider and use WooCommerce for everything. It’s clearly achievable as WPSwings have done it, and it feels like a relatively easy development for WooCommerce to implement.
I would therefore like to see the option to enter any double digit numeric value in the Billing Interval option