Make coupons within heartbeat

I am trying to offer a coupon for annual members as a launch bonus. I don't want this to be the lifetime price for the member, only a discount for their first year.

Stripe allows you to create a coupon, but the coupon will be applied to both annual and monthly prices for a product.

I talked with Stripe support, and right now I would have to create separate products for monthly and annual subscriptions. This means I have duplicate everything in my setup - notably permission for different tiers - in order to offer this coupon.

It would be great if heartbeat could offer coupons. Then I could avoid this duplication.