More flexibility for "Service Package" add-on

Hello,
i'd like to use your "service package" add-on, but unfortunately, it has a restriction that i'd like to adress, maybe you know of some kind of workaround or could add this feature in a future update.

I'm offering 4 different yoga classes, each for a different level (1-4) but all have the same pricing. i'd like to offer customers a service package for that, so they can purchase a package and redeem it for different kind of levels.
But since each level is a different course, the add-on would need a function for a general limit instead for each service.

Cause right now, if i set it up to work with each level and say the package is worth 4 redemptions, i can only set it up like this:

level 1: 1/1
level 2: 1/1
level 3: 1/1
level 4: 1/1

but i want the customer to be able to decide freely, on which course to use his/her redemptions. for example like 3 times on level 1 and 1 time on level 4.

Is there any way to set it this up? And if not, please add this in an upcoming update!

Kind regards